Plastic Bearings: 1. The best quality. 2. The high reputation. 3. The fast delivery time. 1 .Sealing form: OPEN,RS,2RS,ZZ,Z,RZ,2RZ, 2.Material Plastic Material 3.Quality standard: ISO9001:2000 4..Accuracy grade: P0,P6,P5,P4 (ABEC-1, ABEC-3, ABEC-5, ABEC-7) 5.Noise level: Z1, Z2, Z3,Z4 6.Vibration level: V1, V2, V3, V4 7..Inner windage code: C0, C2, C3, C4, C5 8.Chief uses: automatic transmission ...