Derbi GP1 (Piaggio Engine)
Stud installer kit
$ 30.99
If you've ever installed head studs, you know there really isn't a great way to do it. You don't want to use pliars and damage the threads of course. This kit has a ball bearing in it, which allows you to tighten the studs properly, then simply unscrew the tool after. ZERO damage to the threads. This kit comes with m6/m8/m10, it will fit any scooter with studs.