The Power Tower ( Patent Pending ) Support Nuts offered in two sizes. These support nuts offer lightweight stud support for stud lengths ranging 1.080 and longer. The extra support helps to eliminate stud bending and breaking without any additional weight. Use this Support Nut in place of the standard nylon locknut; be sure to apply blue locktight to keep in place. Developed by the demands of snocross racers using up to 1.875 studs. 5/16 - 24 Threads