3 inch (88mm). Versatile half round and flat tapered 600 grit file by James Barry Sharpening. Precision-ground steel file electroplated with 600 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: 151mm Width: 11mm 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 - EM3DTF