The Hillman Group 811591 Hot Dipped Galvanized Hex Bolt， 3/8-Inch x 4-1/2-Inch， 50-Pack<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>They require a pre-drilled hole with compatible female thread</li><li>Hex Bolts feature a six-sided head， which is designed to be tightened using a wrench or drill</li><li>Hot Dipped Galavanized</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31oJPPCRkPL.jpg" noproxy>