ITEM NAME:BT30 ER32 50L CNC Milling Machine Chuck 0.005mm Precision G5G3 BT30 ER32 50L CNC Milling Machine Chuck 0.005mm Precision G5G3 Chuck Holder must be placed collet nut first, and then enclose in the tool, and then lock in body. Entire through-hole, conducive to water and seismic. Accuracy: 0.005-0.01 Spindle Interface: BT30 Designed with Collet Size: ER32UM Projection: 45 mm Colour: silver Material: Car