3 inch (81mm) versatile half-round and flat tapered 400 grit file. Precision-ground steel file, electroplated with 400 grit mono-crystalline diamonds to ensure a superb even finish and finished with a split ergonomic handle pinned through the steel file and finished with a hanging hole for storage. Dimensions: Length overall: 180mm Width: 18mm Grit: 400 Suitable for sharpening many woodworking tools including router cutters, Forstner bits, woodturning gouges, internal & external bevel edges, skews, carving tools, saw blades, small chisels, serrated blades, pruners, shears etc. Guaranteed for 5 Years when used with James Barry Sharpening Original Formula Lapping Fluid Product code: E3DTF