These JConcepts 12mm Hex Mono 2.2 4WD Front Buggy Wheels are a direct fit for TLR 22X-4, B74.1, and XRAY XB4 vehicles, helping to simplify your wheel selection. Mono wheels are the maximum size allowed under ROAR rules and make a statement with their large appearance, slight convex dish shaped design and superior inner rib design. The wheels incorporate an outer glue catch that resists excess glue from running down the wheel face during the gluing process. JConcepts wheels are manufactured using advanced techniques to ensure trueness and durability and are branded with the small JC logo for brand identification and authenticity.