The steel wheel stud is 4 inches long and 5/8"-11 UNC thread that fits any hub that requires a 5/8 stud with a .350 knurled shoulder. The stud is made from high quality grade 8 pre-stressed aerospace material and is black oxide coated for ultimate durability and corrosion resistance. The stud is ideal when you want to run up to a 1" wheel spacer. Extra long, quick start design.