Amana Tool TE-104 CNC High Precision Tool Holder Extension 1-7/64 Dia x 1/2 Shank Dia x 1/4 Inner Dia x 5-7/8 Inches Long, Includes CO-276 for Collet ER-20 and Mini Wrench

CNC High Precision Tool Holder Extender Heat Treated Alloy Steel Spring collet and with these high precision CNC tool extensions. ER collet chucks used for different projects and applications, save money by not purchasing extra-long tools! Choose the correct size spring collet for your bit, set the tool depth and tighten the collet nut using the mini wrench. Have the extra reach you need at economical prices. Featuring: 1/4" inner diameter spring collet included Includes mini wrench ER mini nut and spring collet included with each ER straight shank tool extension,ideal for hard to reach surfaces Shank to pocket runout 0.0004" (0.01mm) Precision ground for best Total Indicator Runout (TIR) Spring collets can easily be changed Max RPM?= 10,000 for safe operation Made from heat treated alloy steel and coated with black oxide finish for corrosion protection.