Bosch GBH 18 V-20 SDS+ Plus Cordless Rotary Hammer inc 2x 5.0Ah Batteries, GAL 18V-40 Charger & L-BOXX 136 Carry Case 0611911073 Cordless hammer drill as powerful as corded now made affordable FEATURES High performance - as fast as corded. Same impact energy, same drilling capacity and same speed as GBH 2-20 Carbon brushes - Interchangeable carbon brush gives high serviceability Powerful - The GBH 18 V-20 offers 1.7 Joules of impact energy Applications - SDS-Plus enables a range of accessories to be used for the right job LED Worklight - For working also in dark areas High versatility 3 mode drive - For drilling, hammer drilling and chiselling Ergonomic design - With soft grip handle Variable speed - With forward / reverse function Rotation clutch control - No abrupt blockage of the tool by unlatching clutch dogs and minimizing torque 100% compatibility - part of the Bosch Professional 18 volt cordless range SPECIFICATION Voltage: 18v Max. Impact Energy: 1.7 J Impact Rate At Rated Speed: 0-4550 bpm Rated Speed: 0-1800 rpm Drilling Range:  Drilling Dia. In Concrete With Hammer Drill Bits: 4-20 mm Max. Drilling Diameter In Steel: 13 mm Max. Drilling Diameter In Wood: 30 mm Weight: 3.2 Kg NOISE & VIBRATION Hammer Drilling in Concrete:  Vibration Emission Value Ah: 12.6 m/s² Drilling in Metal:  Vibration Emission Value Ah: 2.5 m/s² Screwdriving:  Vibration Emission Value Ah: 2.5 m/s²