This is a pack of two Lunsford 5.5x10mm Broached Titanium Ball Studs, and are intended for use with the Associated SC10 4x4, as well as any other vehicle that uses the same size ball stud. Get the strongest combination of all time when you combine Lunsford turnbuckles with these titanium ball studs! All Lunsford ball studs are CNC micro finished from 6AL/4V titanium. The ball diameter is 5.5mm, the thread size is 3mm and the thread length is 10mm.