findmall Tool Handle MT3 Tool Handle ER40 Collet Set for CNC Engraving Machine and Milling Machine with Wrench and 15 Pcs 1/8-1 Inch Collets

steel Collet size range: 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1 inch Clamping range of chuck: 2-26mm; Drawbar end thread: 3/8 inch - 16; Precision: 0.0005 inch For cnc engraving machine and milling machine Made of high-quality alloy steel, with strong durability and good toughness