Set of 4 Trailer Hub Grease Seals E-Z Lube 3500 lbs Axle 1.719 x 2.565 -22028 Fit most 3500 lbs EZ lube and regular axle hubs/drums Double lip 1.719" ID, 2.565" O.D. Cross Ref.# 10-19/171255TB 4 pcs included