Plastic Bearings: 1. The best quality. 2. The high reputation. 3. ... form: OPEN,RS,2RS,ZZ,Z,RZ,2RZ, 2.Material Plastic Material 3.Quality standard: ISO9001:2000 4..Accuracy grade: P0 ... , Z2V2, Z3V3.6) Precition level: ABEC1, ABEC3, ABEC5,ABEC7.7) Files usd in; Motocycle, Motor, Pump, Fan, Are conditioner, Microwave Oven ...