Grinding Wheels: Pack of 100 150 single grit 8 hole sandpaper, diameter 125mm, ideal for all 5" sanders.especially random sanders such as Makit DBO180Z, BO5041 BO5031, Tacklif PRS01A/PRS02A, DeWal DWE6423, Ryoi R18ROS-0, ROS300, Bosc PEX 220 A, PEX 300 AE, PEX 40 0 AE, Vonhaus Random Orbit Sander, BLACK+DECKERKA199 - Go and so on.125mm Grinding Disc Good Material: Alumina grinding pads, made of alumina abrasive, have good wear resistance, anti-static and anti-clogging.The resin bonding system provides a smooth finish and excellent grain support.Fine cut and scratch resistant, for processing large curved surfaces.with special heat treatment, it has excellent polishing, sharpness and wear resistance.Easy to Use: These 125mm sanding discs will not fall off when installed, easy to install and remove.Hook and loop fastener, easy and quick to stick, orbital sanding pads 100 pieces per box strong and durable, hook and loop backing for quick installation, and pre-punched with 8 holes for dust extraction, paper sheet125mm abrasive for random orbital sanding discs.