Hypno wheels are really grippy for their weight and size, like 1.8 or something compared to the 1.3-or-something of Rubbers.
is this bot don't lost all razors in a fight before do a damage thought
Ah, well remembered. Older versions of DSL 2.1 may have the "Narmour" skirt hinge with the enormous collision mesh. JoeBlo fixed the collision mesh so that doesn't happen, you can download it from somewhere.