- Selected materials: Collets and components are made from high quality spring steel. They are wear resistant, shock and tear resistant, sturdy and durable, designed to stay in good condition under harsh working conditions for a long service life. - High precision: Provides precise workpiece positioning during machining with a combined accuracy up to 0.0008 inches. Suitable for milling, drilling, tapping and other related tasks, delivering consistent high quality results. - Complete accessories: Includes MT3 ER32 M12 Collet Chuck and 15 ER32 Collet Sets for MT3 ER32 M12 machines (not included). Also includes a BT ER extension rod handle for holding drills, routers, drill bits with cylindrical shank, and router bits with cylindrical shank (all not included) for CNC router lathes and engraving machines. - Wide clamping range: Supplied with 15 ER32 collets in sizes 0.12 in, 0.16 in, 0.20 in, 0.24 in, 0.28 in, 0.31 in, 0.35 in, 0.39 in, 0.43 in, 0.47 in, 0.51 in, 0.55 in, 0.63 in, 0.71 in, and 0.79 in. This broad range provides flexibility to complete a wide variety of tasks with ease. - Applications and compatibility: Designed for MT3 ER32 M12 machines. Appropriate for milling, drilling, tapping and other compatibility-driven operations on CNC routers, lathes and engraving machines (tools and equipment not included).