Carmex Extension with Internal Coolant Bore for Indexable Milling Holders (E20M10L130) is engineered for precise, efficient threading on CNC mills. This extension keeps your workflow streamlined by enabling strong, reliable threads in a single tool pass while delivering coolant directly to the cutting edge.

• Internal coolant bore: Delivers coolant through the extension to the cutting zone for improved heat management, chip control, and tool life.
• Indexable milling holder compatibility: Optimized to fit Carmex indexable milling systems, enabling quick changes without abandoning the extension hardware.
• Mill-Thread technology: Uses helical interpolation to generate accurate threads on CNC milling machines, expanding your threading options beyond taps and dies.
• One-pass threading: Produces the complete thread profile in a single tool pass, reducing cycle time and setup steps.
• Right- and left-hand threading: A single insert and toolholder configuration can cut both thread directions, increasing flexibility.
• External and internal threading versatility: The same insert and toolholder can thread across multiple diameters, simplifying inventory and setups.
• Double-sided inserts: Most inserts offer two cutting edges for extended life and lower replacement frequency.
• Prismatic tail design: Ensures exact, repeatable clamping in the toolholder for consistent results.
• Tapered threading capability: Supports tapered thread profiles where your application calls for them, expanding application range.
• Coating and durability: Multilayer coating enhances wear resistance and tool life in demanding threading operations.
• Cost-effective operation: Lower tooling costs and reduced need for taps and dies, with less machine power required for larger threads in a single operation.

Designed for shops that demand dependable, rapid threading on standard milling equipment, this Carmex extension helps you shorten cycle times, minimize tool changes, and achieve repeatable thread quality across a range of diameters. Use cases include threading shoulders in blind holes, fast internal threads in housings, and creating robust screw features without sacrificing precision or throughput.