Model No: S688C/2RS Seals: 2RS Rubber Seals Diameter: 8x16x5mm Material: 440C stainless steel Races + Si3N4 Ceramic Balls Precision: ABEC-3 grade Lubrication: Oil or Dry High quality ABEC-3, ABEC-5, ABEC-7 ball bearing set, hybrid ceramic bearing and flanged bearings used for Fishing Reels, Fishing Tackle, RC industry, Fishing Machine, Skateboard and Inlineskate Frames ...