Duplex nickel finish for a superior look and corrosion resistance
Double hex head includes 3/16 inches recessed allen head for easy installation
Removable and reusable
Can visually inspect; no need to put a wrench on to check tightness
Stage 8 3/4 inch Locking Header Bolt Kit features a locking header bolt kit of 3/4 inch which fits the Buick, Olds and Pontiac 8 cylinder up to 1979. The Mopar Big Block 383 - 440 cu/inches (exec 413 cu/inches). It includes (12 ea) 3/8 - 16 X 3/4 inch bolts with DHH (includes 3/16 inch recessed allen Head) and matching locking retainers and clips.