Constructed with hearty heat-treated steel, the 3 in. x 20 in. Chisel Breaker Hammer Bit from Bosch is a dependable tool for carving, shaving, scaling and cleaning concrete. The wide 3 in. chisel blade is fashioned with a 60° cutting angle to sharply and efficiently scrape away masonry material. A 1-1/8 in. hex shank tightens securely into your machine's chuck so it won't slip while in use.