The Bosch 11236VS 7.5 Amp hammer runs on a variable-speed 0 to 850 RPM motor with 0 to 3900 BPM. The hammers Vario-Lock positioning enables the user to rotate and lock the chisel into 36 different positions to optimize the working angle. The unit features three operational modes for versatility hammer only, for light chipping applications with chisels; rotation only, for drilling wood, steel and building materials with optional chuck; and hammer/rotation, for drilling concrete, brick, stone and masonry. The tools maximum capacities are 1-1/8 inches in concrete, 1/2 inch in steel, 1-1/4 inches in wood and 4 inches in thin-wall core bit. It includes 360º auxiliary handle, depth gauge and carrying case.