IRWIN Tools 1892027 Impact Performance Series Double-Ended Screwdriver Power Bit with 4-Inch Length<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Built for maximum durability and long life with impact drivers.</li><li>DoubleLokTechnology ensures both ends of bit lock securely</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>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/21vMFDrrfQL.jpg" noproxy>