Bahco SB-2449 Curved, Blade Wrecking Knife has a handle which is made from impact resistant PPE and a blade hardened to 58–61 HRC for a long lasting edge. The curved knuckle protector works as a lever, whilst the back edge of the blade and handle can be struck with a hammer to make working faster. It has a 4mm thick curved blade that can be used like a heavy-duty carpenters knife. Ideal for rough woodwork, making mortice joints in doors and splitting wood in building and construction, carpentry etc. Blade Type: Curved. Blade Length: 100mm.