29pcs ER40 collets (1/8inch- 1 inch) for CNC machine Specifications: Type: Machine Tool Accessories Material: 40CR Applicable machine: CNC machine 29 PCS PRECISION ER40 COLLETS including: 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″, 3/4″, 25/32″, 13/16″, 27/32″, 7/8″, 29/32″, 15/16″, 31/32″, 1 Features: Select high-quality steel. Big clamping force and wide clamping range It might have some scratches during the transportation. Application: For Widely used in boring, milling, drilling, tapping, CNC, sculpture and other processing operations, also can be supported used with the holder of CNC tool.