Hardened and tempered steel Increased strength and durability High-quality cold chisel Faithfull Cold Chisel 200 x 13mm (8 x 1/2in) | FAI812 Faithfull Cold Chisels are made from high-quality grade steel which is hardened and ground to maximise safety and to ensure longer lasting cutting edges. For cutting brick, concrete and paving slabs. The cutting edge has an angle of approximately 60°. Manufactured to BS 3066. Size: 200 x 13mm (8 x 1/2 in).