... 2,long life,durable and easy to use 3,suit for dry working type 4.polishing pads 5.do OEM velcro polishing ... : 3inchThickness:10mmGrit: #50,#100,#200,#400,#800,#1500,#3000Working type: dry workingApplication: concrete and terrazzo floorsCertification: ISO9001, CE,SGS.Photos:Packing ...