Feature●①. Rotating quiet and high speed, high quality chrome steel bearings are rugged and durable.●②. 100% dimensional tolerance, noise and vibration inspection, for optimal installation and performance.●③. Grease seal with double lip design,no leak. and have a long service life.●④. This trailer hub bearings kit includes, TOTAL 18PCS accessories. 2 PCS bearings (L68149/L68111), 2 PCS races (L44649/L44610), 2PCS grease seals (171255TB Seal OD 1.719), 2PCS cotter pins, 2PCS dust caps (1.98), 2PCS rubber plugs, 2PCS spindle nuts, 2PCS washers, 2PCS Tang Washer.●⑤. If you have any questions about our product, please contact us and we will give you a satisfactory answer.Description