LUXTRKSTO 4Sets 2200 LBS Trailer Hub L44643 L44610 Bearing Kits with Tang Washers · Fit for 1'' Axles/Spindles. · Reinforced spring behind the grease seal lip helps retain grease inside the hub and helps protect water and road grime from entering. · The tang washer is usually used on spindles that have the flat on the threaded end of the spindle. And for some D-style spindles with holes, cotter pins can be used to strengthen the fixation. PACKAGE INCLUDE: 8 X Bearings Sets (L44643/L44610) 4 X Double Lip Grease Seals (12192TB, 1.25''I.D, 1.98''O.D) 4 X Double Lip Grease Seals (15192TB, 1.5''I.D, 1.98''O.D) 4 X Tang Washers 4 X Cotter Pins