GBH5-40D 220V High-Power Dual-Purpose Electric Hammer and Electric Pickaxe GBH 12-52 D Five-Pit Hammer Drill Input Power: 1700 watts Maximum Drilling Diameter: 52 mm No-Load Speed: 0–220 rpm Hammering rate: 1750–2150 blows/min Maximum single impact energy: 19 joules (based on EPTA standard) Weight: 11.5 kg Chiseling function: Concrete