Description Set of 2 double sealed 6005-2RS series scooter and ATV bearings. These bearings are used in a variety of applications including in wheels, transmissions, gearboxes, and various other GY6/QMB139 engine components. The 6005-2RS series, sometimes referred to as 6005RS, are single-row, deep groove ball bearings. Extra light in weight, they come with a 25 mm bore diameter. Check your existing bearings for the series number, which is usually etched into the side of the bearings. Specifications Diameter (Outer): 47 mm Diameter (Inner): 25 mm Width: 12 mm