These chisels are made by a small tool manufacturer in the Czech Republic and are of exceptional quality. The blades are made from fine-grained, nicely tempered chrome-manganese steel and hardened to Rc 59. The blades take and hold an excellent edge. The blades are accurately ground and have a slimmer cross section that woodworkers prefer. As with all edge tool, they'll need final honing/sharpening before use. These chisels are an excellent value in a good quality tool. This is a Premium 6 piece set contains the following sizes: 6 mm, 10 mm, 12 mm, 16 mm, 20 mm and 26 mm. Bevels are ground at a 25 degree bevel. Blades are 4 5/8" to 5 1/2" long. Handles are stained super-hard European Hornbeam and 5 1/2” long. Overall sizes range in length from 9 7/8" to 11". Blades have well-seated heavy steel tangs and handles a brass ferrules to withstand vigorous mallet work. They come in a wooden presentation box.