The Carmex Internal Thread Turning Holder, Left-Hand, 170 mm overall length, is a precision tool accessory built for reliable internal threading. Designed to mate with 22IL inserts and 20 shank size, it delivers steady, accurate bore threads with sturdy insert retention.

• Left-Hand internal threading: optimized for left-handed threading operations to ensure correct thread direction and smooth toolpath.
• Internal threading holder: specifically engineered for producing precise internal threads in bores and cavities.
• 170 mm OAL: extended reach to access deeper bore regions while maintaining rigidity and control.
• 22IL insert compatibility: designed to work with 22IL internal threading inserts for consistent geometry and performance.
• 20 Shank Size: standard shank dimension that fits common tool Holding systems and machine tools.
• U-Type insert interface: secure fit with U-Type inserts to minimize runout and promote repeatable thread formation.
• 1.5° helix angle: optimized for efficient chip evacuation and reduced cutting forces during threading operations.
• Screw clamp retention: robust clamping mechanism to hold inserts firmly in place under cutting loads.

With this holder, you gain precise control over internal thread quality, improved insert life, and predictable performance in challenging bores. The combination of left-hand configuration, compatible inserts, and a tapered helix design helps you achieve clean, consistent threads while maintaining efficient chip management and stable tool engagement.