The Bosch 11264EVS 1-5/8-In. SDS-max® Combination Hammer features a powerful 13.0-AMP motor and has a dual-mode selector for combination versatility – rotary hammer or hammer-only mode. Providing 6.5 ft.-lbs. of impact energy, the tool weighs only 15.2 lbs., for a top performance-to-weight ratio. The hammer has integral clutch that helps to minimize torque reaction. Concrete contractors will appreciate the production in drilling and chiseling applications. The hammer’s 12-position Vario-Lock™ helps to optimize chiseling angles. Bosch’s Vibration Control™ in the hammer mechanism and grip area provide improved user comfort. And with Constant Response™ circuitry, users benefit from smooth starts and constant load under pressure. Specifications Attributes Amperage 13.0 Max. Hole Diameter in Concrete 1-5/8″ No Load RPM 170-340 Chuck Design Keyless No Load BPM 1,700-2,900 Max. Hole Diameter in Concrete-Core Bit 4-1/8″ Voltage 120V Material Metal, Plastic Length 19.25″ Rating 120V Width 4.0″ Chuck Size SDS-Max Weight 15.2lb Includes (1) – 360° Auxilliary Side Handle, (1) – Carrying Case Benefits Powerful 13.0-AMP motor – drives 6.5 ft.-lbs. of impact energy for professional results Vibration Control™ – for all day jobs, tool allows for maximum user comfort Constant Response™ circuitry — provides soft-start and maintains constant speed under load Turbo™ Power — delivers 20 percent more power in hammer-only mode Electro-pneumatic impact system maximizes impact force and minimizes vibration SDS-max® bit system — tool-free bit changes with automatic bit-locking and maximum impact energy transfer rate Dual-mode selector — 2 modes of operation, rotary hammer and hammer only mode Variable-speed dial — for accurate bit starting and controlled chipping applications Vario-Lock™ positioning — rotates and locks chisel into 12 different positions to optimize working angle Integral clutch — helps minimize torque reaction Weighs 15.2 lbs.