Square tungsten carbide grit File 6 MM, Coarse.

Perma-Grit® Tools will cut:-  All Woods, Glass Fibre, Carbon Fibre, Kevlar, Plexiglas, Lexan, Perspex, Acrylics, Plastics, Polystyrene, Brass, Copper, Aluminium, Ceramics, Stone, Horn, Antler etc.