1.high quality, 2.Low price 3.A large stock 4.Low noise 5.stocking feet SKF Bearings(Original SKF NTN FAG NSK )Characteristic of deep groove ball bearing:1. Seal form: open style, Z, ZZ, RS, 2RS, 2RZ2. Bearing stop ring: N,NR3. Class of precision: ABEC-1, ABEC-3, ABEC-5, ABEC-74. Vibration rank: V1, V2, V3, V45. Noise rank: Z1,Z2,Z3,Z465.6. Internal elimination code: C0, C2, C3, C4, C57. Bearing ...