Best For Large Series Toolholders

1. PHASE II #4 Heavy Duty Boring Bar Holder – Model: 250-404 SERIES: #4 OVERALL HEIGHT OF TOOLHOLDER: 2-3/4″ Inside Diameter Of Bushing: 1″ Height From Bottom Of Toolholder To Center: 1-3/8″ Bore Size: 1-1/4″

The PHASE II #4 Heavy Duty Boring Bar Holder is a reliable tool for your workshop. It has a 1 & 1-1/4″ tool bit capacity, making it versatile for various tasks. This holder is built to last with its heavy-duty design.

Its overall height is 2-3/4″, and the inside diameter of the bushing is 1″. The bore size is 1-1/4″, ensuring a secure fit for your tools.

This boring bar holder is a great addition to your toolkit. It’s easy to use and built to handle tough jobs. With its precise design, you’ll get accurate results every time.

2. THINBIT XRI0112R Extra-Large Series 90 Degree Right Hand Head on a 1 inch x 1/2 inch toolholder Shank. Use with Any ‘X’ Series Insert.

The THINBIT XRI0112R is a 90-degree right-hand head designed for CNC and conventional machines. It comes with a 1-inch x 1/2-inch toolholder shank, making it versatile for various applications.

This toolholder works with grooving, turning, face grooving, chamfering, and threading inserts. Use only ‘X’ series inserts for compatibility. The modular head can be replaced if worn or if a different orientation is needed.

Simple to use, easy to replace, and highly versatile. Perfect for precision work in machining.

3. THINBIT LRI0112R Large Series 90 Degree Right Hand Head on a 1 inch x 1/2 inch toolholder Shank. Use with Any ‘L’ Series Insert.

This THINBIT toolholder holds a 90-degree right-hand head. It fits 1″ x 1/2″ shank machines. Use it with any ‘L’ series inserts for many tasks.

It works for grooving, turning, chamfering, and threading. The head is modular, so you can swap or replace it. This lets you change styles or fix wear easily.

The kit includes C Clamp, screws, and wrenches. The shank fits other head styles, too. This makes it flexible for different jobs.

4. THINBIT XRI0112L Extra-Large Series 90 Degree Left Hand Head on a 1 inch x 1/2 inch toolholder Shank. Use with Any ‘X’ Series Insert.

The THINBIT XRI0112L is a 90-degree left-hand head for precision machining. It fits a 1-inch x 1/2-inch toolholder shank. Use it with any ‘X’ series insert.

This toolholder works with CNC and conventional machines. It includes screws, clamps, and wrenches for easy setup. Check the Downloads section for detailed info.

The modular head can be replaced if worn. The shank works with other heads. It’s versatile for grooving, turning, and more.

5. THINBIT LRI0112L Large Series 90 Degree Left Hand Head on a 1 inch x 1/2 inch toolholder Shank. Use with Any ‘L’ Series Insert.

The THINBIT LRI0112L is a 90-degree left-hand head designed for precision machining. It fits a 1-inch x 1/2-inch toolholder shank, making it versatile for various tasks. Use it with any ‘L’ series insert for optimal performance.

This toolholder works with CNC and conventional machines. It includes screws, wrenches, and a C clamp for easy setup. The modular head can be replaced if worn or if you need a different style.

The shank is compatible with other heads, offering flexibility. Detailed product and technical info is available in the Downloads section. Perfect for grooving, turning, and threading tasks.

6. THINBIT 3 Pack LGAT05D2RE ‘L’ Series, TiAlN Coated Carbide, Acme Threading Insert for 5 TPI in Steel, Titanium, Nickel alloys and Stainless Steel with Interrupted cuts.

The THINBIT LGAT05D2RE is a TiAlN-coated carbide insert designed for Acme threading. It works with steel, titanium, nickel alloys, and stainless steel. Use it for interrupted cuts with 5 TPI threads.

This insert fits Large Series toolholders and has a 29-degree angle for right-hand threading. It’s patented and ideal for threading near shoulders or in internal bores.

7. THINBIT 3 Pack LGAT05HSRE ‘L’ Series, TiAlN Coated high Speed Steel, Acme Threading Insert for 5 TPI in Plastics, Composites, Abusive Cutting Conditions and Low RPM Cutting.

The THINBIT 3 Pack LGAT05HSRE is a high-speed steel threading insert. It’s TiAlN coated for extra durability. Perfect for plastics, composites, and tough cutting jobs.

Use it with Large Series toolholders. It handles 5 TPI threads with ease. Works well in low RPM cutting conditions.

This insert has a 29-degree angle and right-hand orientation. It’s patented for quality and performance. Check the Downloads section for more details.

8. THINBIT 3 Pack LGAT05HSRC ‘L’ Series, TiN Coated high Speed Steel, Acme Threading Insert for 5 TPI in Plastics, Composites, Abusive Cutting Conditions and Low RPM Cutting.

The THINBIT 3 Pack LGAT05HSRC is a high-speed steel threading insert. It’s TiN coated for extra durability. Perfect for plastics, composites, and tough cutting jobs.

Use it with Large Series toolholders. It handles 5 TPI threads with ease. Works well in low RPM cutting conditions.

This insert has a 29-degree angle and right-hand orientation. It threads within .070″ of a shoulder. U.S. patented for quality and performance.

9. BT50 Series CNC toolholder, BT50-FMB27-60L Milling Machine Tool Holder Collet(BT50-FMB27-100L)

The BT50 Series CNC Toolholder is a reliable and durable solution for your milling machine needs. It’s designed for easy installation and removal, making it a time-saver in your workflow.

Installs easily with a rubber mallet. Removes quickly with a knock out bar. Jaw Tightening Key simplifies chuck operation.

Its one-piece alloy structure ensures sturdiness and safety, outperforming plastic models. The 3-jaw chuck provides excellent centering for straight shank cutters, making it a trusted choice for precision work.

10. Hertel Indexable Threading Toolholder, External, Right Hand, 1 x 1″ Shank, 1/2″ Insert Inscribed Circle, 7″ OAL, HSE Series HSER

The Hertel Indexable Threading Toolholder is a right-hand tool for external threading. It’s part of the HSE Series, designed for industrial machining.

This toolholder has a 1 x 1″ shank and a 7″ overall length. It uses 22ER inserts with a 1/2″ inscribed circle. Its durable build reduces vibration for smooth threading.

Ideal for precision threading, it ensures consistent thread quality. Its right-hand cutting direction makes it efficient. Perfect for professional machining tasks.