Zirconium Oxide fiber discs Thickness: 0.8MM Grit: P16-P400 Size ... X22MM 230MM/9.0"X22MM Features:Made by Brown Aluminum Oxide, or Silicon Carbide, or Zirconia.This fibre disc have ... a variety of hole patterns.These discs are suitable for using on steel, stainless steel, metal, NF metals, wood, plastic ... the ship manufacturing, automobile, bridge and architectural industries. Zirconium Oxide Fiber Discs