Grinding and polishing in one operation. The fiber glass backing allows the disc to fit into corners, without deteriorating the piece of work. Grinding and sanding on metal: zirconium for hard metals (i.e. stainless steel), aluminium oxide or zirconium for other metals (carbon steel, aluminium…). Cleaning and removal of welding scale, corners and edges. EX Users: shipbuilding, boiler manufacturers, sheet metal shops, automotive, foundries, welding, aluminium fabricators.