Replacement Kits Brand Axle Hub Grease Caps 12 Pack Durable Neoprene Plugs with Excellent Grease Compatibility Replaces Dexter 85-1 & 085-001-00, Tiedown Engineering 88174 & AL-KO 085-016-0 Fits Caps: Dexter 21-31-1, Redline RG04-040, Tiedown Engineering 81168 & AL-KO 021-041-01 Fits Most 2,000-3,500 Pound Axles For Trailer Axle Dust Cap Cup Grease Cover & plug RV Camper Utility 1.98" 4 PACK (4 Pack) Fits Standard brake & idler trailer axles for most 4 lug & 5 lug axles with 1.98" diameter cap standard 2000#-3500# Axle dust covers with plugs included for both types of axles EZ Lube and standard. For Trailer Axle Dust Cap Cup Grease Cover & plug RV Camper Utility 1.98" 4 PACK