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. Help ensure the proper sealing of your vehicle's valve cover by using ARP's professional quality valve cover studs. Many professional engine builders prefer to use studs because of their ability to properly position the gasket and guide the cover into position. These studs are manufactured from black oxide finished chrome moly steel, and they are size 1/4-20 with an overall length of 1.170. This set of 16 studs comes complete with premium-quality washers and traditional hex style flanged lock nuts.