Made from European High-Speed Steel. Extreme Parabolic (XP) Flute Optimised design provides improved chip ejection and faster drilling speeds. Self-Centring Geometry Precision split point delivers faster and more accurate hole placement. Cordless Drill Optimised Requires reduced drilling pressure resulting in improved battery life. Suitable for DIY and professional use in carpentry, plumbing, metalworking, and more, it's available in metric and imperial sizes.