This is a pack of two Lunsford 4.8mm Short Neck Broached Titanium Ball Studs. 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 4.8mm, the thread size is 3mm and the thread length is 6mm.