6001-2RS (6001RS) sealed bearings used on many scooters, ATVs, mini bikes, dirt bikes, and go karts including the Razor Dirt Quad ATV (front wheels only), & both the Razor MX500 & MX650 electric dirt bikes This is a set of two bearings 6001-2RS (6001RS) sealed bearings used on many scooters, ATVs, mini bikes, dirt bikes, and go karts including the Razor Dirt Quad ATV (front wheels only), both the Razor MX500 MX650 electric dirt bikes. This is a set of two bearings. High temperature plastic seals on both sides of the bearing seal the inner ball bearings from the elements. These 6001-2RS (6001RS) scooter bearings are made of chrome steel and are pre-lubricated. Ready to install. Known markings: 6001-2RS 6001-2RS1 6001RS Diameter (Outer): 28 mm Diameter (Inner): 12 mm Width: 8 mm