1、DURABLE AND STABLE: These spring clips are made of high carbon steel, durable, stable and convenient 2、MAIN USE: Spring collet is suitable for all kinds of grinding machine clamping grinding head, suitable for repairing and grinding tires 3、SUITABLE EQUIPMENT: Collet set is compatible with most rotary tools for hardware, hobby, home, etc., as well as CNC lathes, cutting tools and working engraving machines 4、WIDE APPLICATION: Collet set is widely used in machining center, ordinary grinding machine, CNC grinding machine, engraving machine, high speed machine and other processing 5、POWERFUL GRIP: The spring collet chuck four jaw construction provides good contact and a more powerful, burr grip