• Product Name:Diamond Grinding Wheels, Flat Lap Disk.
  • Outside diameter:4" inch (100mm), Arbor hole :5/8" (16mm)
  • Quantity:only 1 Piece, Grit:400 Fine, Thickness :1-1.1 mm
  • Suitable to grinding gemstone, jewelry, glass, rock, carving knife, etc.
  • These diamond discs are one of the finest discs manufactured for Hobby, Lapidary, Glass applications