Tamiya - JR Double Aluminum Rollers w/ Rubber Rings (13-12mm) Electric Accessories Wire including 2 caster blocks and

including 2 caster blocks and 2 spindle blocks

Machined brass

Parts can be painted easily while still on the sprue or can be affixed to something like a pencil or chopstick inserted into the larger holes

They allow the end user to find their perfect weight bias to aid Rock Crawling

the standard 12mm hex design will accept your favorite aftermarket wheels and tires

Tamiya - JR Double Aluminum Rollers w/ Rubber Rings (13-12mm) Electric Accessories Wire including 2 caster blocks 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.