... ,115mm,125mm,150mm,178mm, Material: Aluminum oxide Flexible grinding disc,radial flap disc Diameter X Hole sizeGrit No. 364060801001201501802220 FLAP DISCS100MM/4 ... for iron, mid steel, welding rods, cost iron aluminium, non-ferrous metals and wood.2)Silicon carbide (disc in black color ), (C ... and/or iron compounds.Exhibition booth:Production line: Flexible grinding disc,radial flap ...