TAMIYA 15418 DOIUBLE ALUMINUM ROLLER W/RUBBER RINGS 13-12mm When a Mini 4WD machine leans during a corner section, the upper 12mm roller makes contact with the course walls and helps to stabilize your machine's positioning and keeps you on track. This new Double Aluminum Roller set features rubber rings on the 12mm rollers, which provide a braking effect to produce more stable cornering action.
Specs & Features 13-12mm aluminum roller x 2pcs. vScrews and attachment pieces included.-Can be used with any Mini 4WD PRO and Mini 4WD machine. TAMIYA ORIGINAL