... Size: 100mm,115mm,125mm,150mm,180mm,230mm Velcro backing Silicon Carbide Velcro Disc Grain Backing Diameter X Hole sizeGrit ... :-- Suitable for hook & loop salver and self-adhesive pad used for precision polish of inner hole and flex tube ... weight paper, craft or latex paper, Norton paperMaterials: aluminum oxide, silicon carbide, zirconium oxide, zinc-stearateColor: white, brown, yellow, black, ...