This auction is for the special 5.200" long  ARP studs which are supplied in our main girdle kit. These are for use in a Big Block Mopar engine when using a 1/4" thick main girdle plate over the main caps. These feature the extra long threads on the top end of the stud to allow for the extra 1/4" thickness of the girdle plate, shims and hold down nuts. Normally, 8 of these are required for a complete engine, the rear (#5) main cap uses standard length studs since longer studs are impossible to use in this location due to the interference with the rear seal cap. We offer these individually for service replacement purposes with our own girdle kit, or for those who buy the girdle plate elsewhere and need the special studs.