... , Removing Rust durable working life material availalble: Aluminium Oxide, Silicon Carbide, Zirconia Alumnium Oxidewith Long working life. Perfect polishing perfomance and ... . SizeGritMATERIALThickness of FiberUsage100 x 16mm(4)P16-P400Aluminum Oxide, Silicon Carbide, Zirconia Aluminium0.8mm or 0.6mmWood, Steel, Seams, forgings, marble115 ...