These chisels are manufactured by Narex of the Czech Republic and are of exceptional quality. The blades are made from fine-grained, nicely tempered chrome-manganese steel and hardened to 59 HRc. The blades take and hold an excellent edge. The blades are accurately ground and have a slimmer cross section. Bevels are ground at a 25 degree angle. Handles are stained Hornbeam. Blades have well-seated heavy steel tangs and steel ferrules to withstand vigorous mallet work. Set includes the following chisels: Item # Blade Width Blade Length Handle Length Handle Diameter Total Length 810506 6mm 120mm 138mm 34mm 258mm 810510 10mm 124mm 138mm 34mm 262mm 810512 12mm 126mm 138mm 34mm 264mm 810516 16mm 130mm 140mm 34mm 270mm 810520 20mm 134mm 140mm 34mm 274mm 810526 26mm 140mm 140mm 34mm 280mm WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov