ALL-CARB 29Pcs R8 Collet Set 1/32-1 Threaded Internally 7/16-20 Mill Chuck Holder High Precision Round Spring Collet for Mill Machine

steel Range: 1/32 to 1 inch ER8 collet set (1/32, 1/16, 3/32, 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2, 17/32, 9/16, 19/32, 5/8, 21/32, 11/16, 23/32, 25/32, 3/4, 27/32, 29/32, 31/32, 1). Various models meet your needs. Drawbar thread: 7/16-20 UNF internal thread on the top side, pull up into the keyed taper squeezing the end mill to grip it. Reliable quality: This collet chuck set is made of quality steel and has been quenched with fine workmanship, durable and sturdy. Power clamping, the clamping force of the mill collets set is strong. High Precision: 0006 TIR. This collet set is hardened and precision ground, smooth surface, small resistance, high accuracy, small runout tolerance, guarantees the accuracy of the collet operation.