Tamiya JR Mini Double Aluminum Rollers 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 Double Aluminum Roller set features rubber rings on the 12mm rollers, which provide a braking effect to produce more stable cornering action.