Meet the Carmex Thread Turning Holder Quick Change (CAT) Polygon — a precision tool designed for professionals who demand fast, reliable internal threading on CNC machines. Built for CAT system users, this holder delivers quick-change efficiency without compromising thread accuracy or surface finish.

• CAT polygon compatibility: Designed to fit the CAT toolholder system for rapid, repeatable tool changes during threading operations.
• Internal thread turning: Specifically engineered for accurate internal threading across common profiles with consistent depth and pitch.
• Right-hand orientation: Optimized for clockwise threading sequences with stable tool engagement and predictable chip flow.
• 80 mm OAL (overall length): Compact, rigid body that clears setup constraints while preserving reach for internal threads.
• 16IR insert: High-performance carbide insert geometry tailored for internal threading applications, delivering clean cuts and long edge life.
• C4 shank size: Standardized shank diameter for broad machine compatibility and secure clamping in CAT holders.
• Quick-change capability: Minimize downtime with fast tool changes, boosting spindle uptime in high-volume threading work.
• Rigid polygon design: Polygon geometry enhances rigidity, reduces deflection, and maintains consistent thread quality even on tougher materials.

This holder is ideal for automotive, aerospace, and general manufacturing environments where precise internal threads are a daily requirement. It supports a range of thread profiles, provides repeatable starts and finishes, and aligns with existing CAT tooling to simplify setup and changeovers. Built for durability in demanding shops, it helps machinists achieve reliable thread quality while maximizing production efficiency.