Wheel/ diff bearings on a 1/8th off road car take a constant battering. Dirt, fuel, water and mud all try to kill your bearings and your transmissions efficiency. SMD's 8mm x 16mm rubber sealed bearings come in a tube of 10pcs and with an RRP of under Â£8 quid there is now no excuses for wobbly wheels and gritty transmission.
8mm x 16mm is a common size used by most 1/8th off road cars and many monster trucks.
SMD bearings are lubricated with a special grease, DO NOT wash this out. While grease is seeping out of a bearing dirt has no chance of getting in. Wipe clean with tissue paper and when eventually they become dirty on the inside, replace.