... wheel & sponge abrasive & foam abrasive1-fiber abrasive discMaterial:aluminium oxide,silicon carbide,zirconium oxideApplication : Ideal for removing rust ,paint ,deburing ,polishing welding ... :1) High quality abrasive sponge2) Coated material: aluminum oxide and silicon carbide3) Density of sponge: low, middle, and high4) Used for ...