Grease Cover Dust Cap

Universal Replacement Trailer Hub Dust Cover, Trailer Axle Hub Cap
Providing tight fit, long service life.
Made of high quality materials,ensure good durability.
Designed to proper fits & functions,keeps grease in and dirt out to protect bearings
The dust cap is 1.98" OD and 2.9" 
1.98" OD dust cap for HK3, HK4 & HK8.
2.9" OD dust cap for HK12.