The Carmex Top Clamp Internal Threading Holder (Left-Hand) is a precision tool designed for engineers and machinists who need reliable internal thread cutting with stable, accurate performance. Built for left-handed operations, it delivers consistent results across demanding production runs.

• Length & Shank: 200 mm overall length (OAL) with a 25 mm shank size for solid, rigid engagement in tight bores.
• Left-Hand Internal Threading: Optimized specifically for left-hand threading applications to ensure dependable toolpath control.
• Top Clamp Design: Enhanced stability and rigidity during machining, reducing deflection for precise thread profiles.
• Insert Compatibility: Compatible with IR and IL inserts, including 22 IL insert configurations for secure, accurate threading.
• Durable Construction: Robust build engineered to withstand high-speed machining and demanding environments for long tool life.

This holder delivers steadier performance in hard-to-reach internal threads, helping hitters achieve cleaner thread forms, tighter tolerances, and fewer rework cycles. The top clamp mechanism ensures consistent clamping force, while IR/IL insert compatibility gives you flexibility to choose the right insert for material and thread pitch. Ideal for production settings that require dependable internal threading across a range of metals, from stainless to alloy steels, the 200 mm reach and solid shank provide a trustworthy foundation for repeatable, high-quality results.