features:<br />--100%  and high quality.<br />--sharp・ wear-resistant and high efficiency. optimal rpm 2200・ max rpm 12000.<br />--works good for wet or dry polishing of stones.<br />--perfect for granite・ concrete・ marble・ stone・ tiles etc.<br />--pro grade wet/dry・ diameter 4"・ height 3 mm・ velcro backed flexible.<br />--aggressive and durable made with quality diamond powder impregnated in resin.<br /><br />specifications:<br />size: 100 mm/4"<br />quantity: 8pcs<br />grits: 50・ 100・ 200・ 400・ 800・ 1500・ 3000<br /><br />quantity: 9pcs<br />grits:50・100・300・600・800・1500・2000・3000<br /><br />quantity: 12pcs<br />grits: 30・ 50・ 100・ 200・ 400・ 800・ 1500・ 3000・6000<br /><br />quantity: 14pcs<br />grits: 30・50・100・200・300・400・500・600・800・1000・1500・2000・3000<br /><br />quantity: 15pcs<br />grits: 4pcsx50・3pcsx100・2pcsx200・400・ 800・ 1500・ 3000・ 6000<br /><br /><br />please note:<br />please add water when you operate.<br /><br />packaged included:<br />1 set polishing pads<br />7/8/11/13/14pcs x wet/dry diamond polishing pads<br />1 piece x hook and loop backing pad backer