.High Performance,Long life 2,Competitive price 3,Quick delivery,good service 4,precision Miniature Bearings Features:2,Structure:General,flanged,extended inner ring3 ... / closure: Open,Teflon Sealed,Rubber Seals,2 Metal Shield4,Tolerance codes: ABEC-1, ABEC-3, ABEC-5,ABEC-7 5,Vibration level ...