I_ not sure what the small piece is used for, but am happy with the rest of the products. We will be using the equipment to charge class 8 truck tires.
A little oversized for 19.5 wheel but still worked good.
Clever design. Couldn_ have pulled my 19.5 tire off without it. But only one 1 of the 2 roller hooks fit between tire and 19.5 wheel on far side bead. Still worked good with a little practice and patience.
Como en la foto ....pero la caja rota y sin ning_ tornillo!!! El personal de empaque debe tener m_ cuidado porque vi en otras rese?as que les llego igual que a mi..
jim 
