These Ingersoll Rand pneumatic hammer chisels are built out of heat-treated alloy, making them an excellent option for heavy-duty operations. They have a .401 shank diameter, making them compatible with Ingersoll Rand's 114GQC air hammer, or other tools that run accessories with .401" shanks. This set includes a tapered punch, flat chisel, panel cutter, sheet metal cutter, and spot weld breaker. | Ingersoll Rand 5-Piece 7" Length Hammer Chisel Set