Powers Fastening Innovations 05360S 3/8-Inch by 6-Inch Flat Head Lokbolt As All Steel Sleeve Anchor， 50 Per Box<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Pre-assembled single unit sleeve anchor available in carbon steel and stainless steel</li><li>Can be used in concrete block， brick and stone</li><li>Powers Fastening Innovations</li><li>Extension sleeves are added to create longer lengths</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31m0NAnfK2L.jpg" noproxy>