Hammer Drills and SDS Drills are both ideal for drilling effectively into concrete, masonry or stone and, with the hammer action turned off, into metal and wood. In both styles of machines the hammer action 

Hammer Drill- (500W) £19.35	Silverline SilverStorm Hammer Drill £22.42
Einhell BT-ID650E Impact Drill 650 Watt £24.50	Black & Decker KR50 Hammer Drill 500 Watt £26.54
Black & Decker KR50CRE Rotary Impact Drill Variable Speed 500 Watt £28.59	Black & Decker KR55CRE Rotary Impact Drill Variable Speed 550 Watt £34.67
Ryobi EID-500RS 230 Volt Green Impact Drill 500w £39.78	Black & Decker KR55CRE Rotary Impact Drill Variable Speed 550 Watt + 20 Accessories + Bag £41.82
Hammer Drill 600w-Pro Range £46.72	Dewalt D21721K Impact Percussion Drills £102.08