13 mm Radius Internal Curved hand files. Gritted on the internal surface. Dims 231 x 30 x 11 mm approx.

Concave hand tools grit on the internal curve.   Use to form leading and trailing edges, or radius any sharp corners etc.

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