Description 6 Wheel Lug 1/2-20 x 1-3/8" RH Studs are new and in good condition, not in original packaging. Shows signs of shelf wear. Studs are 7/16-20 x 1" RH thread, knurl length is 1/4" , base length is 5/16" , total length is 1-3/8" with a .630 knurl.