- IRWIN 10503843 Speedhammer Plus Drill Bits - Designed for exceptional fast drilling in brick, block, masonry, concrete and granite - Drills 20% FASTER than competitive drill bits with the same high durability - Patented unique single flute ensures efficient speedy removal of dust and lowers vibrations - 28% Greater capacity means more efficient waste removal - 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 the risk of clogging - The bits have 25% more tungsten carbide for extra strength - The carbide extends the lifetime while keeping cooler while drilling - More aggressive cutting angles and self centring for faster.
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