IRWIN Tools 1902389 Impact Performance Series Screwdriver Power Bits， Assorted Hex， 2-Inch Length， 4-Piece<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Built for maximum durability and long life with impact drivers</li><li>Precision tip geometry delivers superior fitment， reducing stripping and cam-out</li><li>Power Groove designed for compatibility with IRWIN Impact Performance Series Magnetic Screw-Hold Attachment</li><li>Manufactured with heavy-duty， cold-forged， high-grade steel to withstand high torque output</li><li>1/4" quick-change shank is designed to work with impact drivers， and reduces slipping in standard drill chucks</li></ul></div><img src="http://ecx.images-amazon.com/images/I/512aW1EFx5L.jpg" noproxy>