Spring Collets CNC Lathe Milling Chuck -ER11 High Precision 1/8 Inch and 1/4 Inch Collet Nut Set for CNC Engraving Mechine/Lathe Milling Tool

Material: made of 65Mn spring steel, quenched and hardened, internally and externally finely ground, with high precision,high elasticity, tight clamping and stable cutting., Application: ER11 collet nut set is widely used in CNC, milling machines, engraving machines, machining centers and other equipment, High precision: used for milling, boring, drilling, wire tapping and other operations, Included : ER11 collet nut set, includes 1/8 inch collet, 1/4 inch collet and clamping nut