3/4" ID x 40mm x 12mm Non-Standard Stainless Steel Bearing 3/4" x 40x12mmS6203 2RS 12 Sealed Ball Bearing Stainless Steel non standard bearing 3 4" inch x 40mm x 12mm S6203 2RS 12 , Sealed, radial, deep groove ball bearing, bearing is made from Chrome and Chrome cage,6203 2RS 12 bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,bearing is sealed and self lubricated, S6203 2RS 12 bearing is lubricated with grease. S6203 2RS 12 Ball Bearing Deep Groove Radial Ball Bearing