... 2, Steel plat(NA, TAF, TAF=NK) KT182216 Needle Roller Cages for General Usage :Two types:1, Metal stamping(TLA, TA, ... of bearing has multiple structural styles for the choice of customers, such as narrow & broad series, with or without inner races, ... and precision grade, please contact this company.Materials:Material for needle roller is GCr15 bearing steel, quench-hardening HRC60---65.Material ...