self-aligning ball bearing 1212 1:long life high speed 2: strength factory 3: best service , samples available HIGH PRECISION self-aligning ball bearing 1212 Our own brand is WQK, we also can supply OEM service for Europe, USA, Greece, etc developed countries.our preponderance is :1: in the same price , our quality is higher , in the same quality , our price is lower 2: for large quantity ...