Feature●Fine workmanship, good elasticity, high precision and concentricity tolerance are less than 0.008mm.●They are made of high quality 65Mn spring steel and have stable performance.●The collet must be inserted into the collet chuck nut before inserting into the collet chuck.●Excellent collet for CNC milling lathes and workpiece engraving machines.●Each collet is clearly marked so you can easily distinguish them.Description