... Groove Ball Bearing 1.ball bearing6208 2.high quality bearings 3.big stock ball bearing 4.supply good bearings ball bearing ... groove ball bearing Brand MaterialGCr15SiMn, GCr15, G20Cr2Ni4ACertificateISO9001:2008PrecisionP0, P6, P5, P4, P2ClearanceC1,C2,C3,C4,C5 etc.Seal TypeRS, 2RS, R2 ...