- Use: Tataki Nomi is the standard chisel used for musical instrument making, furniture making, and carpentry. - Blade Width: 3,6,9,12,15,18,21 and 24 mm. - Length: The overall length is approximately 225 mm. - Hardness: They harden to more than HRC 63 so they will maintain a sharp edge for much longer than a western equivalent chisel. - They feature red oak handles fitted with steel rings finished with a top of ready-to-use mushrooms.