ARP 1441102 Black Oxide Hex Header Bolts<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Premium grade bolt kit to facilitate installation of exhaust headers</li><li>Rated at 170，000 PSI， which is considerably stronger than Grade 8 hardware</li><li>Bolts are 5/16" in diameter and have a .750 under head length; 14 pieces</li><li>Manufactured from black oxide finished chrome moly steel</li><li>Heads are traditional hex style， and premium-quality washers are included</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51Db4bqbCmL.jpg" noproxy>