Gallagher G681034 20-Pack Multi-Purpose Electric Fence Insulator， Black<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Heavy-duty， Snap-On plastic insulators for steel posts</li><li>Can be nailed to wooded posts or screwed to vinyl posts</li><li>Pin lock allows for easy fence construction and wire removal</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ZSE5s2mVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51yWZX%2BskZL.jpg" noproxy>