Looking for the best parting inserts for large series toolholders? We’ve curated a list of top picks and expert tips to help you achieve clean, precise cuts effortlessly.
Parting inserts are essential tools for precision cutting. They help you achieve clean, accurate results in various materials. Whether you’re working with steel, aluminum, or plastic, the right insert makes all the difference.
Large series toolholders pair perfectly with these inserts for maximum efficiency. They ensure smooth, uninterrupted cuts and reduce material waste. This combo is a game-changer for any workshop.
Ready to find the best parting inserts for your needs? We’ve got you covered with top picks and expert tips. Let’s dive in and elevate your cutting game!
List of Top 10 Parting Inserts for Large Series Toolholders
| Image | Title | Best For | Price |
|---|---|---|---|
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3 Pack LPT085D2 THINBIT LITTLEBIT ‘L’ Series Parting Insert, Uncoated Carbide for Steel, cast Iron and Stainless Steel with Interrupted cuts |
This 3 Pack LPT085D2 THINBIT LITTLEBIT ‘L’ Series Parting Insert is perfect for machinists and metalworkers who need precise cuts on steel, cast iron, and stainless steel. It’s ideal for working with precious metals, thin wall tubing, and small parts. |
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THINBIT 3 Pack LGPT045D2 ‘L’ Series, Uncoated Carbide, Parting Insert for Steel, Cast Iron and Stainless Steel with Interrupted Cuts |
This THINBIT parting insert is perfect for machinists and manufacturers working with steel, cast iron, and stainless steel. It’s ideal for cutting thin materials like tubing or small parts with minimal waste. |
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THINBIT 3 Pack LGPT062D5R ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts |
This THINBIT parting insert is perfect for machinists working with non-ferrous alloys, aluminium, and plastic. It’s ideal for cutting thin materials like precious metals, tubing, and small parts without wasting material. |
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THINBIT 3 Pack LGPT045D5R ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts |
This THINBIT parting insert is perfect for machinists working with non-ferrous alloys, aluminium, and plastic. It’s ideal for cutting thin materials like precious metals, tubing, and small parts without wasting material. |
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CDBP SPB332-S/SPB32-3 Parting Blade with 10 pcs GTN-3 Carbide Inserts Parting Grooving Cut-Off Tool Set, Slotted Tool |
This CDBP SPB332-S/SPB32-3 Parting Blade Set is perfect for machinists and metalworkers who need precise cutting tools. It’s ideal for parting, grooving, and cut-off tasks in tool blocks like SMBB2032, SMBB2532, or SMBB3232. |
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THINBIT 3 Pack LGPT085D2 ‘L’ Series, Uncoated Carbide, Parting Insert for Steel, Cast Iron and Stainless Steel with Interrupted Cuts |
This THINBIT parting insert is perfect for machinists and manufacturers working with steel, cast iron, or stainless steel. It’s ideal for cutting thin materials like tubing or small parts with precision and minimal waste. |
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THINBIT 3 Pack LGPT045D57L ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts |
This THINBIT parting insert is perfect for anyone working with non-ferrous metals, aluminum, or plastic. It’s ideal for cutting thin materials without wasting material. |
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THINBIT 3 Pack LGPT045D5R7R ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts |
This THINBIT parting insert is perfect for machinists working with non-ferrous alloys, aluminium, and plastic. It’s ideal for cutting thin materials like precious metals, tubing, and small parts without wasting material. |
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THINBIT 3 Pack LGPT062HSR ‘L’ Series, Uncoated High Speed Steel, Parting Insert for Plastics, Composites, Abusive Cutting Conditions and Low RPM Cutting |
This THINBIT parting insert is perfect for cutting plastics, composites, and materials under tough conditions. It’s ideal for low RPM cutting and works great with precious metals, thin tubing, and small parts. |
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THINBIT 3 Pack LGPT025D2R ‘L’ Series, Uncoated Carbide, Parting Insert for Steel, Cast Iron and Stainless Steel with Interrupted Cuts |
This THINBIT 3 Pack LGPT025D2R is perfect for machinists and manufacturers working with steel, cast iron, and stainless steel. It’s ideal for cutting thin materials like tubing or small parts with precision and minimal waste. |
Detailed Reviews
Discover the top 10 parting inserts for Large Series Toolholders, carefully selected for precision and durability. Whether cutting steel, aluminum, or plastics, these tools deliver clean results with minimal material loss. Find the perfect match for your needs and take your cutting tasks to the next level.
1. 3 Pack LPT085D2 THINBIT LITTLEBIT ‘L’ Series Parting Insert, Uncoated Carbide for Steel, cast Iron and Stainless Steel with Interrupted cuts

The 3 Pack LPT085D2 THINBIT LITTLEBIT ‘L’ Series Parting Insert is a powerful tool for cutting steel, cast iron, and stainless steel. It’s uncoated carbide ensures durability and precision. Perfect for interrupted cuts, it delivers clean results every time.
Its narrow widths reduce material loss and part deflection, making it ideal for precious metals and thin wall tubing. It can cut within 1/16″ of the collet face or shoulder of larger parts. Use it for parting solid stock up to 1.000″ or tubing with walls up to .500″.
For detailed product info, check the Downloads section below the photos. Pair it with Large series toolholders for best performance. This insert is a reliable choice for precision cutting.
| Pros | Cons |
|---|---|
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Perfect For:
This 3 Pack LPT085D2 THINBIT LITTLEBIT ‘L’ Series Parting Insert is perfect for machinists and metalworkers who need precise cuts on steel, cast iron, and stainless steel. It’s ideal for working with precious metals, thin wall tubing, and small parts.
Ready to Purchase?
2. THINBIT 3 Pack LGPT045D2 ‘L’ Series, Uncoated Carbide, Parting Insert for Steel, Cast Iron and Stainless Steel with Interrupted Cuts

The THINBIT 3 Pack LGPT045D2 is a parting insert designed for steel, cast iron, and stainless steel. It’s perfect for interrupted cuts and works with Large series toolholders.
Narrow widths reduce material loss and part deflection. It’s ideal for precious metals, thin wall tubing, and small parts. Cuts as close as .062″ to the collet face or shoulder.
Use it for parting solid stock up to 1.000″ or tubing with walls up to .500″. Works with straight or 90-degree toolholders. Made from uncoated DURA-MAX 2000 carbide for durability.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT parting insert is perfect for machinists and manufacturers working with steel, cast iron, and stainless steel. It’s ideal for cutting thin materials like tubing or small parts with minimal waste.
Ready to Purchase?
3. THINBIT 3 Pack LGPT062D5R ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts

The THINBIT 3 Pack LGPT062D5R is a parting insert designed for non-ferrous alloys, aluminium, and plastic. It works best for solid stock and tubing without interrupted cuts. This uncoated carbide insert is part of the ‘L’ Series, known for precision and durability.
Its narrow widths reduce material loss and part deflection, making it ideal for precious metals and thin-walled parts. It cuts flush to the collet face or shoulder, ensuring clean, accurate results.
Use it with Large series toolholders, either RH straight or LH 90-degree. It handles solid stock up to 1.000″ and tubing walls up to .500″, offering versatility and efficiency.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT parting insert is perfect for machinists working with non-ferrous alloys, aluminium, and plastic. It’s ideal for cutting thin materials like precious metals, tubing, and small parts without wasting material.
Ready to Purchase?
4. THINBIT 3 Pack LGPT045D5R ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts

The THINBIT 3 Pack LGPT045D5R is a specialized cutting tool designed for precision parting operations. It’s perfect for working with non-ferrous alloys, aluminum, and plastic. This insert ensures clean, uninterrupted cuts every time.
Narrow widths reduce material waste and minimize part deflection. It’s ideal for precious metals, thin tubing, and small parts. Use it for solid stock up to 1.000″ or tubing with walls up to .500″.
Made from uncoated DURA-MAX 5000 carbide, this insert is durable and reliable. Pair it with Large series toolholders for straight or 90-degree cuts. Check the Downloads section for detailed product info.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT parting insert is perfect for machinists working with non-ferrous alloys, aluminium, and plastic. It’s ideal for cutting thin materials like precious metals, tubing, and small parts without wasting material.
Ready to Purchase?
5. CDBP SPB332-S/SPB32-3 Parting Blade with 10 pcs GTN-3 Carbide Inserts Parting Grooving Cut-Off Tool Set, Slotted Tool

The CDBP SPB332-S/SPB32-3 Parting Blade is a precision tool for cutting and grooving. It comes with 10 GTN-3 carbide inserts, ensuring long-lasting performance. This set is perfect for detailed work.
Its compact size (1.26″ x 0.063″ x 5.906″) fits SMBB2032, SMBB2532, and SMBB3232 tool blocks. The moveable length lets you control cut depth easily. No wrench is needed for adjustments.
This set includes one SPB332 blade and 10 GTN-3 tin-coated inserts. It’s designed for 3mm thick carbide inserts, making it versatile and efficient. A must-have for precision tasks.
| Pros | Cons |
|---|---|
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Perfect For:
This CDBP SPB332-S/SPB32-3 Parting Blade Set is perfect for machinists and metalworkers who need precise cutting tools. It’s ideal for parting, grooving, and cut-off tasks in tool blocks like SMBB2032, SMBB2532, or SMBB3232.
Ready to Purchase?
6. THINBIT 3 Pack LGPT085D2 ‘L’ Series, Uncoated Carbide, Parting Insert for Steel, Cast Iron and Stainless Steel with Interrupted Cuts

The THINBIT 3 Pack LGPT085D2 is a parting insert designed for steel, cast iron, and stainless steel. It’s perfect for interrupted cuts and works with Large series toolholders.
Narrow widths reduce material loss and part deflection. It cuts within .043″ of the collet face or shoulder. Use it for solid stock up to 1.000″ or tubing with walls up to .500″.
Made with uncoated DURA-MAX 2000 carbide, this insert is durable and reliable. Check the Downloads section for detailed product info and compatible toolholders.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT parting insert is perfect for machinists and manufacturers working with steel, cast iron, or stainless steel. It’s ideal for cutting thin materials like tubing or small parts with precision and minimal waste.
Ready to Purchase?
7. THINBIT 3 Pack LGPT045D57L ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts

The THINBIT 3 Pack LGPT045D57L is a parting insert designed for non-ferrous alloys, aluminium, and plastic. It works best for solid stock and tubing without interrupted cuts. This uncoated carbide insert is part of the ‘L’ Series.
Its narrow widths reduce material loss and part deflection. It’s ideal for precious metals, thin wall tubing, and small parts. Cuts can be made as close as .062″ to the collet face or shoulder.
Use it with Large series toolholders or any straight/90-degree toolholder. It handles solid stock up to 1.000″ and tubing walls up to .500″. Perfect for precise cutting in non-ferrous materials.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT parting insert is perfect for anyone working with non-ferrous metals, aluminum, or plastic. It’s ideal for cutting thin materials without wasting material.
Ready to Purchase?
8. THINBIT 3 Pack LGPT045D5R7R ‘L’ Series, Uncoated Carbide, Parting Insert for Non-Ferrous Alloys, Aluminium and Plastic Without Interrupted Cuts

The THINBIT 3 Pack LGPT045D5R7R is a parting insert designed for non-ferrous alloys, aluminium, and plastic. It’s perfect for clean, uninterrupted cuts.
Narrow widths reduce material loss and part deflection. Ideal for precious metals, thin wall tubing, and small parts. Works with M03 or M04 spindle sides.
Use it for solid stock up to 1.000″ or tubing with .500″ walls. Made from uncoated DURA-MAX 5000 carbide. Compatible with Large series toolholders.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT parting insert is perfect for machinists working with non-ferrous alloys, aluminium, and plastic. It’s ideal for cutting thin materials like precious metals, tubing, and small parts without wasting material.
Ready to Purchase?
9. THINBIT 3 Pack LGPT062HSR ‘L’ Series, Uncoated High Speed Steel, Parting Insert for Plastics, Composites, Abusive Cutting Conditions and Low RPM Cutting

The THINBIT 3 Pack LGPT062HSR is a high-speed steel parting insert. It’s perfect for cutting plastics, composites, and tough materials. Use it in low RPM cutting for best results.
This insert works with Large series toolholders. It fits RH straight or LH 90-degree holders. Check the Downloads section for detailed info and compatible tools.
Its narrow width reduces material loss and part deflection. It’s ideal for precious metals, thin tubing, and small parts. Cuts flush to the collet face or shoulder with ease.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT parting insert is perfect for cutting plastics, composites, and materials under tough conditions. It’s ideal for low RPM cutting and works great with precious metals, thin tubing, and small parts.
Ready to Purchase?
10. THINBIT 3 Pack LGPT025D2R ‘L’ Series, Uncoated Carbide, Parting Insert for Steel, Cast Iron and Stainless Steel with Interrupted Cuts

The THINBIT 3 Pack LGPT025D2R is a parting insert for steel, cast iron, and stainless steel. It’s perfect for interrupted cuts and works with Large series toolholders. Use it for solid stock or tubing with specific thicknesses.
Its narrow widths reduce material loss and part deflection. This makes it ideal for precious metals, thin wall tubing, and small parts. It cuts flush to the collet face or shoulder on either spindle side.
The uncoated DURA-MAX 2000 carbide ensures durability and performance. Pair it with RH straight or LH 90-degree toolholders for best results. Check the Downloads section for detailed product info.
| Pros | Cons |
|---|---|
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Perfect For:
This THINBIT 3 Pack LGPT025D2R is perfect for machinists and manufacturers working with steel, cast iron, and stainless steel. It’s ideal for cutting thin materials like tubing or small parts with precision and minimal waste.
Ready to Purchase?
Buying Guide
Parting inserts are key tools for precision cutting. They help you get clean, accurate results in various materials. The right insert makes all the difference.
Choosing the best parting inserts for large series toolholders can boost your cutting game. Here’s a simple guide to help you pick the perfect one.
Factors to Consider When Buying:
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Material Compatibility:
Choose inserts designed for the materials you work with, like steel, aluminum, or plastic. Using the right insert ensures clean cuts and longer tool life. -
Cut Type:
Decide if you need inserts for interrupted cuts or uninterrupted cuts. This affects the insert’s design and performance. -
Width and Size:
Narrow widths reduce material loss and part deflection. Pick the size that fits your toolholder and cutting needs. -
Coating and Material:
Uncoated carbide is durable and works well for many materials. Some inserts use high-speed steel for specific tasks like cutting plastics or composites. -
Toolholder Compatibility:
Ensure the insert works with your large series toolholder. Check for compatibility with straight or 90-degree holders. -
Cut Depth and Precision:
Look for inserts that allow precise cut depth control. This ensures accurate results and reduces waste. -
Durability:
Choose inserts made from high-quality materials like DURA-MAX carbide for long-lasting performance. -
Application Specifics:
Consider your specific needs, like cutting thin wall tubing, precious metals, or small parts. Some inserts are tailored for these tasks.
With these factors in mind, you’ll find the perfect parting insert to elevate your cutting game!