Help ensure the proper sealing of your vehicles valve cover by using ARPs professional quality valve cover bolts To maintain a reputation for zero defects, ensure optimum quality control, and produce fasteners of exceptionally high quality, ARP controls all aspects of the manufacturing process, performing all operations in-house where they can be closely monitored ARP takes extraordinary steps to produce the very finest products of their kind on the market today These bolts are manufactured from heat treated 8740 chrome moly steel with a black oxide finish, and feature traditional hex style heads Each bolt is size 14-20 with an under head length of 812, and the set of 8 bolts comes complete with premium-quality washers