Narex Czech Steel 4 piece set 6 mm (1/4") , 12 mm (1/2") , 20 mm 11/16") , 26 mm (1 1/16") Butt Woodworking Chisels Made by a small tool manufacturer in the Czech Republic Blades are made from fine-grained, nicely tempered chrome-manganese steel and hardened to Rc 59 Contains the following sizes: 6 mm (1/4"), 12 mm (1/2"), 20 mm (13/16") and 26 mm (1 1/32") Bevel ground at 25 degrees Handle is stained beech and has flat spot on back to prevent rolling