This Stanley 3-piece cold chisel set (Model 4-18-298) is designed for cutting and shaping various metals including wrought iron, cast iron, steel, brass, bronze, copper, and aluminum. It is also effective for removing nuts and rivets. The chisels are made from high-grade Chrome Vanadium (CRV) steel for durability and feature a yellow powder coating for increased visibility. The set includes three chisels: 1 x 10mm (3/8") with a length of 140mm (5 9/16"), 1 x 12mm (1/2") with a length of 150mm (6"), and 1 x 16mm (5/8") with a length of 170mm (6 3/4").