Narex Czech Steel Premium Firmer Chisel 4 pc set 6 (1/4"), 12 (1/2"), 20 (3/4") , 26 (1") mm w/ Hornbeam Handles 811506-811526 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 Blade sizes are 6 mm (1/4"), 12 mm (1/2"), 20 mm (13/16") and 26 mm (1 1/32" Sides are ground square and bevels are ground at a 25 degree bevel. Handles are made from super hard European Hornbeam