Irwin HSS Reduced Shank Pro Drill Bit 11.0mm OL:142mm WL:94mm is made from high-performance, high-speed steel. They have a 118° split point shape for increased performance and very good centring. The drill bits ensure precision starting, with no need to pre-punch or pilot drill. They penetrate the material quickly, requiring little effort and feed pressure.
Irwin Masonry Drill Bit 10.0 x 160mm is designed for fast and efficient drilling in brickwork, concrete and breeze block, especially with cordless drills. They drill up to 60% faster than competitive drill bits whilst maintaining the same high durability.