This motor shaft collet is made of high quality steel material, straight shank with clamping nut to be tightened Extension rod diameter and the other parts are precision ground to eliminate unbalance, increase safety when cutting Straight extended shank fits for deep processing, meeting the needs of extending the depth of processing Collet is well packed in a protective container with label for safe transportation and storage, Weight: 0.0440924524 pounds, Manufacturer: TOPINCN