Powers Fastening Innovations 06204 Dropins - 1/4-Inch Internal Thread Type 304 Stainless Steel Drop In Expansion Anchor， 100 Per Box</br></br><div style="text-align:left"><b>[Product Information]</b><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></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/312tcqFKtwL.jpg' noproxy></br>