The blades of these Rider exclusive bevel edge chisels are fine-grained, chrome manganese steel. They are carefully hardened and tempered to 59 HRC. Sharpened and ground with a 25° bevel, the blades require only final honing to achieve a fine, long lasting edge (we suggest a 30° micro-bevel). In cross section, the blades are slightly slimmer than a standard chisel. This allows much improved clearance when working into a corner and helps prevent binding in a slot. Each chisel features a tough polypropylene handle with TPE softer inserts. The handles are oval and the softer inserts ribbed. These features ensure comfortable yet secure grip giving you complete control. A metal striking cap allows you to use a steel hammer for heavier cuts. Supplied in a strong wooden case, this 5-piece set comprises the following sizes: 6mm, 12mm, 20mm, 25mm and 32mm.The blades are 100mm long and the overall chisel length is 250mm. European made.