This Trailer Buddy Bra is designed to fit the 2.441 or 2.717 Trailer buddies (6 lug or 8 lug hubs). This cover slips over the end of your Trailer Buddy Bearing to help keep it clean and prevent grease from slinging all over your wheel. This Bra also is very helpful to keep the grease fitting and greasing area clear of dust and dirt. In addition to protecting your greasing area, you will also be keeping the indicator ring free of materials that could block it from working properly. It is ideal to use the Bra Cover on your Bearing Protector.