The Carmex Thread Turning Holder Standard for Internal threading is a precision tool designed for machinists who need dependable internal thread production. This left-hand variant is built to deliver clean, accurate threads in tight bores, with a focus on reliability and repeatable results.

• Left-hand internal threading holder: optimized for left-handed internal threading applications to ensure predictable cutting direction and consistent results.
• 100 mm overall length: extended reach that maintains rigidity for deep bore operations without sacrificing stability.
• 10 mm shank size: compatibility with common machine tool holders for quick, secure mounting.
• 11IL insert compatibility: designed to accept 11IL internal threading inserts for precise, stable cuts.
• U-Type holder compatibility: engineered to fit U-Type inserts for secure seating and easy replacement.
• 1.5° helix angle: optimized to improve chip evacuation and reduce cutting forces during threading.
• Screw clamp design: robust clamping mechanism that keeps the insert firmly in place under load for consistent performance.

This holder is ideal for producing internal threads in a variety of materials, from aluminum to hardened steels, where deep bore threading and reliable chip control are critical. The combination of a precise U-Type insert interface, a 1.5° helix, and a secure screw-clamp system delivers smooth operation, better surface finish, and longer insert life. For shops that need versatility, this left-hand internal threading holder pairs well with the corresponding right-hand model to cover a full range of internal threading tasks, while maintaining quick setup and repeatable results.