Narex Czech Steel Premium 4 pc set 8 mm (5/16"), 10 mm (3/8"), 16 mm (5/8") , 32 mm (1 1/4") mm Chisels w/ Hornbeam Handles 863202 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 8 mm (5/16"), 10 mm (3/8"), 16 mm (5/8") , 32 mm (1 1/4") mm Bevel ground at a 25 degree bevel. Handles are made from super hard European Hornbeam