This is a set of two Lunsford 4.8x3x7mm Broached Titanium Ball Studs and are intended for use with most Kyosho 1/10th scale cars and trucks. Get the strongest combination of all time with these titanium ball studs from Lunsford. All Lunsford ball studs are CNC micro finished from 6AL/4V titanium. 4.8mm is the ball diameter, 3mm is the thread size and 7mm is the thread length.