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 for the hand-held 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 variety of different materials. The most suitable for general difficult grinding processing, such as narrow trench wall, ditch, hole, scratch, ribs and micro-fine. Especially for 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# 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 before the mirror processing. color: ran colors, don'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 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. !!! Please contact us if you require a larger quantity we will reply in 24 hours. !!! Shipping 1.If you need to buy in bulk, please contact, we will reply in 24 hours. 2.We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control. 3.Usually product Reaches after about 12-45 business days depending on destination. If you have not received your shipment within 45 days from payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Refund or resend product will be offered if item still not received. 4.We maintain high standards of excellence and strive for 100% customer satisfaction! Feedback is very important. We ask you contact us immediately BEFORE you give us neutral or negative feedback, so that we can satisfactorily address your concerns. It is impossible to address issues if we do not know about them! THANK YOU :)