产品描述： 3M? Diamond Cloth Belts 674W Diamond mineral contained in unique 3-dimensional structures bonded to a durable cloth backing. Small belts recommended for use on file belt hand tools. Provides long lasting, consistent performance on hard-to-grind materials. Full Description ? Recommended for finishing and dimensioning a variety of hard-to-grind materials, including tungsten carbide and chrome carbide thermal sprays, yttria-stabilized zirconia and alumina ceramics, and carbon fiber epoxy composites.