The Bosch SDS Max Demolition Hammer features a variable speed dial for excellent control in chipping applications. The constant response circuitry provides constant speed under load, as well as overload protection. The vario lock positioning rotates and locks the chisel in 12 different positions. Includes: auxiliary handle and carrying case. ADDITIONAL SPECIFICATIONS: Rating: 120V; Amperage: 14.0; No Load BPM: 900 - 1,890; Impact Energy (ft.-lbs.): 12.4 EPTA; Length: 22.5"; Weight: 22.5 lbs.