Description:

High concentricity -- The inside and outside of the tool holder are integrally formed. Fine control processing bring more stable performance and high concentricity.. Easy to Use - Place the router collet extension shank in the 1/4-inch router collet and the router bit shank in the extension collet and tighten both; M Type wrench included.. 40Cr + carbon steel - Collet chuck holder is made of 40Cr material, effectively suppressing vibration, possess high concentricity, and stable processing and long service life. Using carburizing and quenching process, the hardness is higher.. 17mm clamping range - The clamping range is from 17mm / 0.04 0.28in, come with stable structure, excellent performance. Head Diameter: Approx. 16mm / 0.63in. Tool Handle Diameter: Approx. 10mm / 0.39in.. For high accuracy machine tool processing - After inner hole ground treatment, suitable for high accuracy machine tool processing and has a longer life than ordinary tool holders..