... bearing, thrust needle roller bearing, thrust tapered roller bearing, spherical thrust roller bearing, clutch bearing, etc.3 retainer: cooper, nylon, bakelite, stainless.4 quality ... GCr15, SiMn etc8 feature: low noise, long life ,high precision,9 apply: machine tools, electrical ,railways,automotive ... machinery10 packing: plastic bag single box+carton+pallet.(according to your requirement )