The Carmex Thread Turning Holder Through Coolant is a precision tool designed for internal threading tasks, delivering consistent, high-quality threads in deep bores. Built for versatility, it supports both right- and left-hand threading applications when paired with the appropriate IR/IL inserts.

• Through-Coolant Bore: Ceramic-like coolant passage through the holder directly to the insert for efficient cooling and chip evacuation during internal threading.
• Internal Threading Capability: Specifically engineered for internal threading with IR (internal right-hand) and IL (internal left-hand) inserts, giving you flexible threading options on a single holder.
• Right-Hand Threading: Optimized geometry for precise right-hand internal threads with reliable insert alignment and cutting stability.
• Ideal Insert Compatibility: Designed to work with 16IR inserts, ensuring a secure, accurate fit and dependable performance in demanding applications.
• 170 mm Overall Length (OAL): Long reach to access deeper bores while maintaining rigidity and control during threading operations.
• 20 mm Shank Size: Standard shank dimension compatible with common tool holders and turret interfaces for easy integration into existing setups.
• Screw Clamp Insert Connection: Robust screw-clamp mechanism locks the insert securely, minimizing movement and improving repeatability in tough cutting conditions.
• Durable Construction: Built to withstand the demands of precision internal threading, delivering consistent results across multiple jobs and materials.

For machinists and shops that demand clean, accurate internal threads, this holder offers targeted performance: through-coolant cooling, secure insert seating, and a practical reach that helps you tackle deep or complex bores with confidence. Its IR/IL insert compatibility expands your threading capabilities without sacrificing precision, making it a reliable choice for aerospace, automotive, and general precision machining projects alike.