Set of 4 ER-20 Straight Shank Collet Chuck Extensions For Reaching Deep Narrow Pockets, Half Inch Shank Diameter, Two Inch Shank Length, Hardened Alloy Steel Toolholding Extensions For CNC Milling

Deep-Reach ER-20 Collet Chuck Extensions, 1/2 in Shank
✔️ 4x ER-20 straight shank tool extensions, 1/2 in dia, 2 in long

These ER-20 straight shank collet chuck extensions are hardened alloy steel toolholding accessories designed to extend reach in CNC milling setups. They help reach deep, narrow pockets and tight work envelopes in aluminum and steel parts.

✅ Shank diameter: 1/2 in
✅ Shank length: 2 in
✅ Collet type: ER-20
✅ Material: Ground and hardened alloy steel

💡 What is an ER-20 collet chuck extension used for in CNC milling? This handy accessory helps reach deep pockets and narrow recesses while keeping toolholding rigid.

• Extends reach without re-clamping or removing the setup
• Maintains concentricity with the ER-20 collet for accurate cuts
• Made from ground and hardened alloy steel for durability in tough setups
• Compatible with standard CNC toolholding systems

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