Description:Fiber oilstone (commonly known as the super thin stone) combine a high ceramic fiber with thermoplastic resin, with high hardness, wear resistance and not easy to . Except for the hand- grinding, and is suitable for application of pneumatic, electric reciprocating grinding machine. It is the most perfect used in the ultrasonic vibration machine. Ceramic fiber oilstone can grind the mold with a of different materials. The most suitable for general difficult grinding processing, such as narrow trench wall, ditch, hole, scratch, ribs and -fine. Especially for quick removal hardening surface of mold after . Grinding can use water or oil as grinding agent. Grit size: P150,P180,P220,P320,P400,P600,P800,P1000,P1200 ( 1 piece each, 9 pieces in ) Suggestion: 220#, 320# for removing hardening surface of mold after electric discharge machining and mechanical rough cut. 400#, 00# for removing the fine machining marks and general grinding. 800#, 1000#, 1200#, 1500# used for fine grinding or polishing the mirror processing. color: random colors, 't accept the specified color Material:Alumina Fiber Whetstone Size:100 * 4 * 1mm Package Contents: 9 * fiber whetstone 1 * clamp Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.