Product Description Set the pace with IRWIN SPEEDHAMMER� Plus (11x260mm). With 28% greater flute capacity, the innovative design goes straight in and straight out. It removes dust and debris really fast. And it�s particularly effective in uncured concrete due to clog-free performance. Innovative head and tip geometry - 25% thicker carbide tip improves strength and durability. Aggressive concave cutting angles increase drilling speed by up to 20%. Extra short drill bit head clears drilling dust directly into the flute, reducing the risk of clogging. Unique flute design with new extra deep, asymmetrical flute design provides faster dust removal and increases drilling speed. Fully hardened chrome-vandium steel body resulting in maximum rupture strength and longer life.