NathoBuilds titanium ball studs
Coming from NathoBuilds are their new 5.5mm broached Grade 5 titanium ball studs. They are 45 percent lighter than standard steel ball studs, twice as strong as Grade 2 material and they have been designed and made with a taller neck for added strength and character for the car, but still having the same geometry as the standard ball studs. The ball studs are available as pairs or complete sets for the Yokomo YZ-4SF, or Team Associated B74, B6.2, SC6.1 and T6.1.
Source: NathoBuilds [nathobuilds.com]