Tamiya - JR Double Aluminum Rollers w/ Rubber Rings (13-12mm) Electric Accessories Wire By adding mounting points to

By adding mounting points to the 2 diff cover holes this will help prevent snapping the 2 upper bulkhead screws off of the bulkhead

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

the rocket can reach cloud topping altitudes of 1000 feet

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

Tamiya - JR Double Aluminum Rollers w/ Rubber Rings (13-12mm) Electric Accessories Wire By adding mounting points toWhen 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.