GRK RSS516518HP RSS HandyPak 5/16 by 5-1/8-Inch Structural Screws， 50 Screws per Package<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Use GRK Bit T-30</li><li>Self-Tapping W-cut thread design</li><li>Zip-Tip</li><li>Patented Climatek coating</li><li>Lag Screw Alternative</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31jkEJo5AaL.jpg">