Feature●Standard straight shank drill. Made from Swedish steel as the base material●Blade diameter: 0.4 inches (10.0 mm); Groove length: 3.7 inches (95 mm); Total length: 5.1 inches (130 mm); Shank diameter: 0.4 inches (10.0 mm); Weight: 2.2 oz (60 g)●Grinding grooves. Fully polished finish for excellent sharpness●High Speed Steel (HSS)Description For use with ordinary steel