608-2RS sealed wheel bearings for gas and electric scooters This bearing is also known as 608RS Description 608-2RS sealed wheel bearings for gas and electric scooters. This bearing is also known as 608RS. This is a widely used size bearing and it can be used in various applications. Made from chrome steel, these bearings can rotate up to 34,000 RPM. Each bearing has 2 rubber seals to protect the bearing from dust or any possible contamination. Bearings are pre-lubricated with grease. The 608-2RS wheel bearing is an upgraded bearing to be used in place of the 608ZZ wheel bearing. 608-2RS bearings use rubber seals in place of metal shields for superior protection against dirt, dust, and grime, thereby increasing the lifespan of the bearings. 8mm inside diameter, 22mm outside diameter, 7mm thickness. Note that 1 set is required for each wheel. Specifications Diameter (Outer): 22 mm Diameter (Inner): 8 mm Width: 7 mm Precision Rating: ABEC-1 or better