Irwin Tools 4935076 5 Piece Hammer Drill Bit Set<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Patented carbide tip controlled self centering when starting holes; aggressive angles for faster drilling</li><li>Patented flute design for rapid dust removal， reduces clogging and increases penetration speed</li><li>Short drill head forces drilling dust into flute</li><li>140° cutting tip provides more cutting surface than competitor’s tip， reduces breakout in through-hole applications; centering point prevents walking</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41lP4ipitNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31q1p-ZpijL.jpg" noproxy>