Needle Roller Bearings: 1.ISO9001:2000 2.High precision 3.OEM service 4.Considerable price... Needle Roller Bearings: with ribs NK, RNA49,RNA48,NA69,RNA69,NKI,NA49,NA48 series......suitable for the occasion of small space and high load capacity and widely used for gear driving system, turning system of automobile and engineering machinery as well as motor connecting rod of a motorcycle.