The Bearing Buddy Bra is a vinyl cover that fits over the Bearing Buddy to contain excess grease and keep it off tires and wheels. The Bearing Buddy automatic pressure relief feature allows excess grease to escape if the hub is overfilled. Many users tend to overfill, and, during travel, the excess grease can be thrown onto tires and wheels. The Bearing Buddy Bra is easily removed for checking hub lubricant level. If excess grease accumulates inside the bra, periodically clean it out. Sold in Pairs; Bearing Buddy Bra SizesModel 17B - Fits Bearing Buddy model number 1781, 1810Model 19B - Fits Bearing Buddy model number 1980, 1980A, 1938, 1968, 2047, 2080, 2080TModel 23B - Fits Bearing Buddy model number 2328,2441, 2717, 2562, 2240