... holes Size: 100mm,115mm,125mm,150mm,180mm,230mm Velcro backing Silicon Carbide Velcro Disc Grain Backing Diameter X Hole sizeGrit No.SI ... or latex paper, Norton paperMaterials: aluminum oxide, silicon carbide, zirconium oxide, zinc-stearateColor: white, brown, yellow, black, blueCoating: closed, semi-closed, openHole: 1 ... "”, 4", 4.5", 5", 6", 7", 9"Grit: P36-P1200 Silicon Carbide Velcro Disc