Black Decker BEH201 Compact Corded 10mm Masonry Hammer Drill 450W 240V Features Benefits Hammer action suitable for drilling into masonry, Lock on button for greater comfort during longer tasks, 450W power suitable for most DIY drilling tasks, Variable speed and reverse switch for added versatility. Specifications POWER SOURCE: Corded PRODUCT TYPE: Hammer Drill KITBOX: No LOCK-ON SWITCH: Yes POWER RATING: 450 W PLUG VOLTAGE: 230 V NO LOAD SPEED: 0-2800 rpm CHUCK TYPE: Keyed Single Sleeve BEATS PER MINUTE: 0-48000 bpm CHUCK SIZE: 10 mm MAX. DRILLING CAPACITY (WOOD): 10 mm MAX. DRILLING CAPACITY (STEEL): 6 mm MAX. DRILLING CAPACITY (MASONRY): 10 mm REVERSE ACTION: Yes VARIABLE SPEED: Yes SECONDARY HANDLEYes NUMBER OF GEARS: 1 SOFT GRIP: No.