Holders
& Bodies
Turning holders, milling cutter bodies, boring bars, and custom toolholders built to work with your inserts and machines. Manufactured in-house for tighter tolerances and faster delivery than offshore alternatives.
Precision CNC ground — Grand Rapids, Michigan
Why Engineers Specify Spec Tool
A great insert in the wrong holder underperforms every time. We manufacture toolholders and cutter bodies precision-matched to the inserts we make — so everything is optimized together.
Matched to Your Inserts
Every holder and body is designed to work with specific insert geometries. We match pocket angles, clamping style, and insert size to maximize performance.
In-House Machining
Holders are machined and ground at our Grand Rapids, Michigan facility. Tighter tolerances than offshore alternatives — consistent shank-to-pocket concentricity.
Turnkey Solutions
Need a complete tooling package — inserts, holders, and setup instructions? We build turnkey solutions for new programs and production lines.
Quick Delivery
Standard holders often ship same week. Custom toolholders typically 2–4 weeks depending on complexity. Rush available for critical-path programs.
Holder and Body Families
From standard turning holders in stock to fully engineered custom toolholders, we manufacture the complete holding system for your inserts.
Most CommonTurning Holders
Precision-ground turning toolholders for indexable insert systems. Available in external and internal configurations for OD, ID, threading, and grooving.
- Shank sizes: 3/4" – 2" square & round
- ISO and ANSI insert pocket styles
- Lever, screw, and clamp lock styles
- Right-hand, left-hand, and neutral
Milling Cutter Bodies
Face mill and shoulder mill cutter bodies designed for indexable insert systems. Custom pocket configurations available for non-standard insert geometries.
- Diameters: 2" – 12" face mills
- Arbor and Weldon shank styles
- 4–12 insert pockets standard
- Custom pitch and pocket available
PrecisionBoring Bars & Heads
Single and twin-bore heads for precision ID boring. Adjustable fine boring heads available for diameter tolerances to ±0.0001".
- Boring range: 0.750" – 8" ID
- Modular and fixed head styles
- Fine boring to ±0.0001" diameter
- Anti-vibration damped bars for deep reach
CustomCustom Toolholders
Engineered-to-order toolholders built to your machine, setup, and insert requirements. Common for multi-spindle, swiss screw, and dedicated production applications.
- Any shank, pocket, and insert style
- Built to machine interface prints
- CAD/CAM designed in-house
- Prototype to production quantities
A note on pricing ranges
The ranges shown are meant to help you budget and set expectations — not replace a formal quote. Holder pricing varies widely by shank size, clamping style, and whether the holder is standard or custom-engineered. The best way to get accurate pricing is to tell us your machine, insert, and application. We quote within 24 hours.
Technical Specifications
General capability ranges across our holder and body product families.
Need a Complete Tooling System?
Tell us your machine, insert, and application — we'll spec out the complete holder and insert package and have a quote back to you within 24 hours.
Related Product Families
Other cutting tool solutions from Spec Tool
InsertsCarbide Inserts
Standard and custom carbide turning, milling, and threading inserts for all material groups.
InsertsSuper Abrasives
Ceramic, PCD, and CBN tooling for hardened steels, cast iron, and non-ferrous materials.
ServicesCustom Tooling Services
Fully engineered tools and holders built to your print — prototype to production quantities.