Stage 8 8900 Locking Header Bolt Kit for GM Small Block<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Grade 8 bolts will not stretch when hot</li><li>Duplex nickel finish for a superior look and corrosion resistance</li><li>Double hex head includes 3/16 inches recessed allen head for easy installation</li><li>Removable and reusable</li><li>Can visually inspect; no need to put a wrench on to check tightness</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51Ob3ksOueL.jpg" noproxy>