... HK series NK seriesNKI series NA series,etc. Our Needle Roller Bearings comply with International Quality with Reasonable price,Best serviceand ... fully guranteed.They are used in engine components such as rocker arm pivots, pumps, compressors, and transmissions .Size: 4 ~ 160mm Series ... , NA, NAV, RNAV, AXK, AXW, NTA, AS, WS, ZS needle roller bearing HK0910