The Bosch SDS Plus Bulldog Rotary Hammer features 2 modes of operation, rotary hammer and rotation only. The rotating brush plate provides equal power in reverse. The hammer also features a variable speed trigger with reversing for accurate starting and fastener removing. The integrated dual fan system creates air suction for excellent dust collection. Includes: 360 degree auxiliary handle and carrying case. ADDITIONAL SPECIFICATIONS: Rating: 120V; Amperage: 6.1; No Load RPM: 0-1,000; No Load BPM: 0-4,400; Impact Energy (ft.-lbs.): 1.7 EPTA; Max Capacities Concrete: 3/4"; Max Capacities Steel: 1/2"; Max Capacities Wood: 1/2" - 3/4"; Max Capacities Concrete (Thin Wall Core Bit): 1-1/2"; Length: 14.0"; Weight: 5.5 lbs.