Professional drills for commercial or occasional use HSS metric drill 11mm HSS Blacksmith drill Manufactured from HSS (High Speed Steel) for maximum strength and durability HSS heat treated drill for maximum strength and durability Reduced shank allows the drill to be used by a lot smaller drilling machines Suitable for drilling numerous materials including steel, metal, aluminium, copper etc... Extremely durable drill that provides a perfect cut every time 13mm (1/2") shank Total length – 150mm 118 degree point drill