Yasunari Diamond Sharpening Stone 400 - 1000 Grit rip back of chisel blade is

back of chisel blade is slightly hollow to reduce friction

additional blades are available

Chisel comes sharp ready for use

Tool Manufacturer:  Shogun (Japan)

Yasunari Diamond Sharpening Stone 400 - 1000 Grit rip back of chisel blade isJapanese dual sided diamond sharpening stone (400 1000 grit) made by Yasunari. This diamond stone has been made from a single solid block and embedded with monocrystalline diamond. Unlike traditional whetstones, this one is metal based and requires no soaking before use. Combination diamond stone made up of 400 grit for ideal for coarse sharpening or repairing damaged blade or knife edges, it removes a substantial amount of material making it perfect