The Carmex Thread Turning Holder with Carbide Shank is built for precision internal threading, delivering reliable rigidity and through-coolant performance for demanding jobs. Ideal for machinists and shops that value consistent internal thread quality across a range of diameters.

• Left-Hand Internal Threading Holder: optimized for left-handed threading operations to match your machine setup.
• Carbide Shank: rigid, wear-resistant shank that maintains accuracy under heavy cutting forces.
• Through Coolant Bore: integrated coolant channel for effective chip evacuation and cooling directly at the cutting edge.
• 125 mm Overall Length (OAL): generous reach provides stability for internal threads while maintaining maneuverability.
• 8 Shank Size: robust interface designed for a secure tool assembly.
• 08UIL Insert Compatibility: designed to work with 08UIL insert geometry for reliable seating and performance.
• Screw Clamp Connection: secure clamping mechanism minimizes insert movement and tool dislocation during machining.
• Internal Threading Capability: dedicated for internal thread turning with consistent thread finish.

With a carbide shank and a secure screw clamp, this holder delivers steady rigidity, reducing vibration and improving surface finish on internal threads. The through-coolant design keeps heat and chips under control, extending tool life and maintaining dimensional accuracy in long cuts. Its left-hand configuration and compatible 08UIL insert make it a practical, reliable choice for projects that require precise internal threads from small to large diameters, whether you’re finishing holes, preparing fastener threads, or building prototypes. For best results, ensure proper coolant flow through the bore and secure the insert firmly before starting the cut, then monitor depth and feed to preserve tool life and thread quality.