Tamiya - JR Double Aluminum Rollers w/ Rubber Rings (13-12mm) Electric Accessories Wire for sleek aerodynamic properties and

for sleek aerodynamic properties and a great look

Steel cross pin inserts reduce differential case deformation by increasing the contact area with the differential case

including 2 caster blocks and 2 spindle blocks

Machined brass

Tamiya - JR Double Aluminum Rollers w/ Rubber Rings (13-12mm) Electric Accessories Wire for sleek aerodynamic properties andWhen 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.