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7/8 SDS Rotary Hammer bosch 11228VSR bosch 11228VSR 7/8 SDS Rotary Hammer Bosch 11228VSR Specifications: Rating: 120 volts AC Amps: 6.9 amps No-load speed: 0 to 1100 rpm No-load beats per minute: 0 to 6150 bpm Impact energy: 1.6 ft./lbs. Max hole diameter in concrete: 7/8 Max hole diameter in concrete : 2-1/2 Max hole diameter in wood: 1 Optimal concrete capacity range: 3/16 to 5/8 Length: 14-1/8Bosch Includes: Auxiliary handle Depth gauge Carrying case Bosch Features: SDS-Plus bit system offers tool-free bit changes with automatic bit locking dust protection and maximum impact-energy transfer rate Multifunction selector offers 3 modes of operation: rotation only rotary hammer and hammer-only mode Pistol-grip handle for compact ergonomic design Vario-Lock positioning rotates and locks chisel into 36 different positions to optimize working angle Variable-speed reversing trigger for accurate bit starting as well as removing fasteners or bound bits 360-degree auxiliary handle with built-in depth gauge delivers wide range of movement along with consistent drilling depth Integral clutch helps minimize torque reaction Double-insulated UL-listed complies to OSHA