This is a pre‑assembled pair of 3.8″ modular wheels with ultra‑rugged Sledgehammer® off‑road tires that are glued and foam‑inserted at the factory, so you can bolt them on and go without any tire gluing or mounting hassle. The open‑block tread pattern is engineered to shed mud and debris while delivering excellent traction and control on loose surfaces like dirt, gravel, grass, and other rough terrain.