Duro Wet Diamond Core 67mm x 450Wet diamond core drill for hand held and rig mounted use in a wide range of construction applications including heavily reinforced and non reinforced concrete plus hard brick and block. Extreme life and speed of cut. USE ME FOR All types of brick including class A & B engineering. All types of concrete including light & heavily reinforced. Stone such as Hard York. Occasional use in lightweight block and abrasive stone. For hand held and rig mounted