The IRWINSDS Speedhammer Plus Drill Bits are designed for SDS drilling. They drill exceptionally fast into brick, block, masonry, concrete and granite. The patented, unique single flute design promises efficient, fast removal of dust and lower vibrations and 28% greater capacity meaning more efficient waste removal. They have a patented extra-short drill bit head which means the head takes 80% of the workload, ensuring higher durability and speed. Clears drilling dust directly into the flute, reducing any risk of clogging. The bits have 25% more tungsten carbide for additional strength and they drill 25% faster than competitive drill bits with the same high durability. In addition, they feature more aggressive cutting angles and self-centring for faster drilling.