The wheel set includes a slim, open cell insert, which can be installed as a cushion but also provides an equal platform for the tire insert to rest against. Also included is a pair of steel, serrated, 4mm thin pattern lock-nuts for greater security. The Tribute wheels are available in white, black and silver colors to match any color scheme or realistic build. The overall width of the wheels is true to scale which allows a more compact design and included reinforcement ribs on the inside help reduce hub flex.