... steel,Stainless steel Tolerance gradeGB/T307.1-205 ID Size 10mm~280mm Quality standardISO 9001:2000 standard Precision P0,P6 ... inspection8.Rust prevention9.Product packagingHigh Performance 2012 NSK NTN KOYO IKO THK Deep Groove Ball Bearing 6088 Tianjin HuaJingRui ... LTD mainly Swedish SKF bearing, Japan NSK bearings, NTN bearing, KOYO bearing, IKO bearing, Germany FAG bearing, INA bearing, the ...