The Makita HR3001C is a corded rotary hammer with a 3-mode operation for "Rotation Only", "Hammering with Rotation" or "Hammering Only". It has drastically increased drilling efficiency thanks to its redesigned hammering mechanism. Features Double insulation Variable speed Forward / reverse rotation Torque limiter Constant speed control "No hammering when idling" function helps increase tool life Anti-vibration main handle Adapted for SDS+ Plus bits Depth gauge Specification Volatge: 110V Impact Energy: 3.9 J Max In Concrete (TCT Bit): 30mm Max In Concrete (TCT Core): 80mm Max In Concrete (Diamond Core): 80mm Max In Wood: 32mm Max In Steel: 13mm Impacts Per Minute: 0 - 4500 ipm Input Wattage: 1050 W No Load Speed: 0 - 840 rpm Shank: SDS+ Plus Net Weight: 4.1 - 4.5 kg Noise Sound Pressure: 94 dB(A) Noise Sound Power: 105 dB(A) Noise K Factor: 3 dB(A) Vibration Chiselling: 11.0 m/sec² Vibration Hammer Drilling: 13.5 m/sec² Vibration Drilling Into Metal: 6.0 m/sec² Standard Equipment 1x