... .Accuracy:P0,P6,P5.P4 4.Accept EOM bearing1.Material:Chrome steel/GCr15 2.ISO9001:2000 3.Accuracy:P0,P6,P5.P4 ... ,51100,51200,51300,51400,DAC,BC, etc. Ring MaterialChrome Steel ,Carbon steel,Stainless steel Tolerance gradeGB/T307.1-205 ID Size 10mm~280mm ...