... grit product is suitable for sanding putty, fine grit product is suitable for sanding paint surface. L338 Backing: Film Raw ... # Grit: 60#-2000# Usage: Furniture, wood, metal, filler, putty, electronic, autobody, paint etc.This material is mainly made into: Velcro sand ... . It is mainly used in the sanding of car paint, paint, filler, putty, electronic product, metal, aluminum alloy etc.This product ...