Powers Fastening Innovations 06322 Mini-Dropin - 3/8-Inch Internal Thread Carbon Steel Mini Drop In Expansion Anchor， 100 Per Box<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>All-steel， machine bolt anchor</li><li>Can be used in solid concrete， hard stone and solid block</li><li>100 per box</li></ul></div><img src="http://ecx.images-amazon.com/images/I/21d8Xv9akIL.jpg" noproxy>