Spear & Jackson 103mm Brick Bolster with Guard. This chisel is manufactured to British standards and is suited for cutting bricks during building work. It has a suitably hardened cutting edge but should not be used on concrete containing reinforcing bars. The bolster is 230mm (9") in length with a 100mm (4") wide blade. Manufactured to British Standard BS 3066: 1995 using the latest production methods and equipment, this bolster is made from chrome vanadium for better quality and harder wear resistance, meaning it will need sharpening less often. It is also more resistant to mushrooming after prolonged use. Features: Fitted with a strong guard to protect the user from injury. Chrome vanadium construction. Specification: Model Number: 22-649R Octagonal Diameter: 25mm (1") Length: 230mm (9") Blade Width: 100mm (4") Type: Brick Cutting Weight: 2kg