Simpson Strong Tie MTH114S #7 by 1-1/4" #2SQ TH Underlayment Gray (2500 per Box)</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Trim head with nibs for easy countersinking</li><li>#2 square drive (driver bit in each box; replacement bit model BIT2S)</li><li>High-low threads</li><li>Sharp point， curved collation</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31gmDhvX1YL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41t2M3siClL.jpg' noproxy></br>