DT Swiss 6903 Bearing (Sinc Ceramic) (30mm OD, 18mm ID, 7mm Wide)

DT Swiss SINC Ceramic Cartridge Bearings. Features: Designed by DT Swiss with precise tolerances and the high end materials you expect Silicon nitride ball bearings are an extremely tough and durable ceramic material Precision ground steel alloy bearing rings are designed specifically for the ceramic bearings This combination reduces rolling resistance to an absolute minimum and provides high durability Specs: Bearing:6903 Special ID X OD X W Mm:18x30x7mm Remarks:Bearing upgrade for 240S hubs with 18mm O.D. axle