ARP 1001203 Sbc 3/8""X.750""Drl 12Pt Hd" Description: SB Chevy 3/8 x .750" drilled 12pt header bolt kit Pkg: kit Pkg Type: skin Material_1: 8740 chrome moly Finish_1: black oxide Material_2: N/A Finish_2: N/A Origin: USA Category: Cylinder Head Product Line: Header Kit Type: Bolt