1.High quality and Competitive price, 2.ISO9001:2008 3.material:chrome steel and stainless steel 1.ISO9001:2000 2.model series:NK,NKS,RNA49,RNA69,RNA49-RS,RNA49-2RS 3.good price 4.Needle roller bearings without inner ring Needle roller bearings without inner ring includes NK,NKS,RNA49,RNA69,RNA49-RS,RNA49-2RS series.The rolling needles roll directly on the quenched and ground shaft.The needle ...