The Carmex Thread Turning Holder Through Coolant is a precision internal threading tool designed for machinists who need reliable left-hand internal threads with efficient through-coolant cooling. Built for demanding operations, it offers secure insert seating and versatile IR/IL compatibility in a compact, long-reach package.

• Through-Coolant Bore: integrated coolant channel delivers efficient chip evacuation and cooling directly to the cutting edge.
• Internal Threading Capability: optimized for both internal right-hand (IR) and internal left-hand (IL) threading applications using the appropriate inserts.
• Left-Hand Threading Compatibility: specifically suited for IL inserts to produce precise left-hand internal threads.
• Insert Compatibility: designed for 16IL internal left-hand inserts, ensuring secure, accurate seating.
• Screw Clamp Connection: robust screw-clamp mechanism secures the insert to minimize tool movement during cutting.
• Dimensions: 170 mm overall length (OAL) with a 20 mm shank size to fit compatible machines and holders.
• Durable Construction: engineered for repeatable precision in internal threading tasks, maintaining stability under cutting loads.

Ideal for manufacturers and workshops that regularly produce internal threads in challenging materials or deep cavities, this holder delivers clean, consistent thread quality with reduced workpiece heat and smoother chip control. Its long reach and secure clamp help you tackle intricate internal features, while the through-coolant design supports longer tool life and better surface finishes compared to non-coolant setups. Whether you’re aligning with IL inserts for left-hand threads or IR inserts for right-hand threads, this Carmex holder provides a reliable foundation for precise, repeatable internal threading results.