Pair Of Trailer Bearing Repair Kits For 1 Inch Straight Spindles Kit Includes (4) - L-44643 Bearings - 1 Inch Inside Dimension (4) - L-44610 Races - 1.98 Inch Outside Dimension (2) - Grease Seals - 1.98 Outside Dimension / 1.25 Inside Dimension Dust Cap - 1.986 Inch Diameter - 1.16 Inch Depth Perfect for those on the road repairs!