DEWALT DW1649 8-Piece 7/16-Inch Shank Self-feed Bit Kit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Aggressive， replaceable self-feed spur for efficient rough-cutting of holes</li><li>Unique cutting geometry and open tooth design for more sharpenings and longer life</li><li>One-cutter design on even the smallest bits for improved efficiency</li><li>Flat sided， 7/16-inch ball groove joint for quick changes and minimal slippage</li><li>Includes 5-1/2-inch extension， 1-， 1-1/8-， 1-1/4-， 1-1/2-， 1-3/4， 2-1/8-， and 2-9/16-inch self-feed bits， replacement parts， and kit box</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51qc6G%2B9S3L.jpg"><img src="http://ecx.images-amazon.com/images/I/51jMIkQ1RbL.jpg" noproxy>