Description Set of two 6904-2RS sealed wheel bearings. This size 6904-2RS bearing is used on the now defunct line of BladeZ gas and electric scooters, as well as the current model Razor Dirt Quad. This bearing is also known as 6904RS. This bearing and it can be used in various applications. Each bearing has 2 rubber seals to protect the bearing from dust or any possible contamination. Bearings are pre-lubricated with grease. Specifications Outer Diameter: 37 mmInner Diameter: 20 mmWidth: 9 mm Compatibility Bladez Powerkart G300 Bladez Powerkart G400 Tanaka PaveRacer TPK-400GS Tanaka PaveRacer TPK-470GS