HPI Racing starter shaft is constructed of steel. This product includes one Starter shaft with o-ring.
Length: 184mm (7.25")
Diameter: 5.6mm (0.22")
HPI Roto Starter system
exactly as I ordered, my truck is coming together nicely
i bought a ofna starter backplate for a traxxas 3.3 and it takes the 2 pin shaft this one fits and no you dont need thar starter gun just a drill (cordless works best) something some of us already have around just throw it in the chuck and starter up