Narex Firmer Gouges Chisels Set, Narex 863700 cut shallow curved grooves for general wood removal from concave surfaces. Firmer chisels produce a rough initial cut by removing expendable wood. After using a firmer chisel, you might use a bevel edge chisel for more detailed work. The name "firmer" is derived from the French "former", meaning "to form" or "to shape. Made by Narex in the Czech Republic. 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 taper in width which improves penetration into wood. Blades have a black coating to resist wear and corrosion. The back bevels are ground at a 25 degree angle. Handles are waxed European Hornbeam. Blades have well-seated heavy steel tangs and solid brass ferrules to withstand vigorous mallet work. These chisels are an excellent value for a good quality tool.