Wall rollers. Made for the JAPAN CUP 2025 Wakening Venom CIRCUIT. This item can also be used in 2026 depending on the layout. Uses TAMIYA genuine parts. Uses 17mm rubber rings. *Lock nuts are silver. *Depending on the shape and height of the rear brake stay, you may need to adjust the direction and height of the wall rollers yourself. *Some minor scratches may occur during production. Please understand. Used only once. *No returns or refunds. We are not responsible for any accidents or troubles during shipping. Please purchase with your consent.