IRWIN Metal Countersink Drill Bit Set， 5 Piece， 1877793<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Precision ground 82° tip for countersinking most machinable metals， wood， and plastic</li><li>Made from industrial grade high speed steel for increased durability</li><li>Includes a black oxide finish for added corrosion resistance</li><li>Five-flute design reduces vibration for smoother drilling and extended life</li><li>1/4" round shank fits all handheld and stationary drills</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51GhxMXUDYL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41X70d4PNVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31MS6EKGGpL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31jts6BgAhL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/416KKtK9IlL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41DKtLgmpyL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/411pyJsSwgL.jpg" noproxy>