Oath Binary Wheels are a spoked wheel with a hollow core. The spokes are multilayered in higher stress areas for strength, but the hollow core between the mirrored spokes make the wheel light weight. The Binary wheel also uses Oath's Tactile Urethane with high grade rebound to make your riding feel extremely smooth. A 30mm wide wheel will give riders a larger contact point with the floor. A larger contact point also means that there is a larger balance point for manuals, and fakies (going backwards). This is the wider version of the Binary wheel, coming in at 30mm wide. This is different from the industry standard, so the wheel may not fit your fork or deck. If you're not sure if your set up can run these wheels, don't hesitate to reach out!