Compact 4-way diamond sharpener designed for carving flat and curved chisels. Features 2 flat sides with coarse (400G) and medium (600G) grit for use on chisels, knives, scissors and many other cutting blades, and 2 diamond rods (600G) for honing concave wood-carving chisels and moulding plane blades. Rods can be removed to be used individually, or rotated in the holder to increase working life. Can be used dry or with water as a lubricant., no oils are necessary. Overall size: 103 x 40 x 12mm. 400 & 600 Diamond Grit Single-Sided Diamond Rods: 6mm & 12mm Diameter No Oils Needed 400 & 600 Diamond Grit Single-Sided Diamond Rods: 6mm & 12mm Diameter No Oils Needed