Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
Product Explanation ■ "Mini 4 wd PRO Grade Up Parts Series" is lined up with a set of 4 hex ball bearings.
Used in place of bearing parts. Attaching ball bearings is the first step to improve performance.
Reduces rotational resistance to transmit power without waste, increases top speed and extends running time.