Description:Fiber oilstone (commonly known as the super thin stone) combine a high purity ceramic fiber with thermoplastic resin, with high hardness, wear resistance and not easy to break.Except Compatible With the hand-held grinding, and is suitable Compatible With 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 variety of different materials. The most suitable Compatible With general difficult grinding processing, such as narrow trench wall, ditch, hole, scratch, ribs and micro-fine. Especially Compatible With quick removal hardening surface of mold after EDM.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 total )Suggestion:220 , 320 Compatible With removing hardening surface of mold after electric discharge machining and mechanical rough cut.400 , 00 Compatible With removing the fine machining marks and general grinding.800 , 1000 , 1200 , 1500 used Compatible With fine grinding or polishing beCompatible Withe the mirror processing.color: random colors, don't accept the specified colorMaterial:Alumina Fiber WhetstoneSize:100 * 4 * 1mm Package Contents: 9 * fiber whetstone 1 * clampOnly the above package content, other products are not included.Note: Light shooting 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.