Dorman 711-255J Pack of 20 Purple Lock Nuts with Key<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Pack of 20 Lock Nuts with Key</li><li>Style: Acorn， Spline-Drive</li><li>Coating: Purple</li><li>Thread Size: 1/2" - 20</li><li>Overall Length: 1.40"</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41uqFSh3KJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41y3iAfe7TL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/517mEKmpWcL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41TIpNfxntL.jpg" noproxy>