Hammer with SDS-max bit system for tool-free bit changes, automatic bit locking, dust protection, and efficient impact-energy transfer rate * Combination dual mode selector has two modes of operation, rotary hammer and hammer only mode * Variable-speed dial provides accurate bit starting and controlled chipping applications * Include auxiliary handle, carrying case * Measures 23-1/2 inches long, weighs 24-1/2 pounds, has a 1-year warranty