Amazon.com: Trailer Bearing Dust Cap 4 Pieces Trailer Axle Grease Cap Wheel Center Caps Lube Grease Covers with 4 Rubber Plugs Replacements for Trailer Wheel Hubs(1.98 Inches for 2,000 to 3,500 lb) : Automotive
Grease Cap w/ Rubber Plug 8-Bolt Hubs, 2.717" OD - Trailer Parts Unlimited
2.44" Grease Caps - Fits Most 5,200 lb Axles
3.5k Trailer Axle Hub/Dust/Grease Cap - 3500 lb capacity - 1.99" | Axle Components | The Trailer Parts Outlet
EZ Lube Grease Cap & Rubber Plug | Seal-Rite Products LLC
1.98 Accu-Lube Dust Cap, EZ Lube Fits Standard 5 Lug Trailer Hubs