... , Si3N4), Plastic, Carbon steel, etc.Surface Special finish: Zinc plated, nickel plated, Chrome plated, Rubber casting, Plastic coated, etc.Small order are acceptedAdvantage:Most ... .Precision RateP0,P6,P5,P4.p2cageStamped steel cage or solid brass cage Shield/closureOpen ball bearing, Z, ZZ, RS, 2RS, 2RZTolerance ...