Grinding can use water or oil as an abrasive. Ceramic fiber whetstone can grind molds of many different materials. Most suitable for generally difficult grinding, such as narrow groove walls, grooves, holes, scratches, ribs and micro. Particularly suitable for quick removal of hardened surfaces of molds after . In addition to hand-held grinding, it is suitable for pneumatic and electric reciprocating grinding machines. It is the most perfect ultrasonic vibration machine. Description: Fiber whetstone (commonly known as ultra-fine stone) is a combination of high-purity ceramic fiber and thermoplastic resin, with high hardness, wear resistance and not easy to break. Granularity: P220, P320, P400, P600, P800, P1000, P1200, Weight: 0.04739938633 Pounds, Manufacturer: Tuesoa