Description: High quality flap discs designed for trade use. Choose the Grit you require from the drop down box above. A fantastic tool for de-rusting, de-scaling, de-burring and cleaning welding seams. Ideal for The Home, Workshop, Hobbyists, Tradesmen, Builders and DIY Enthusiasts, etc. Disc Details: Size: 115mm (4.5") Bore: 22.2mm Max Speed:13,300RPM Material: Zirconium Oxide Choice of Grit: * 40 Grit Coarse Coarsest grain, high cutting power, fast material removal, but rough surface. Uses: Quickly removes large amounts of metal, welds or rust. Coarse grinding of wood (e.g. to remove old paint or burrs). Initial shaping of stone.