Buy a replacement grommet when the grommet around your LED trailer taillight starts to wear down. These grommets are made of professional-grade rubber._Easily & Quickly Replace Worn Trailer Taillight Grommets_When the rubber grommets on round LED trailer taillights wear over time, the material starts to degrade, causing the seal against the taillight to become compromised. This may allow moisture and debris to permeate the seal and potentially damage vital electronic components. Quickly and easily replace these worn-out grommets with our 4" round LED trailer taillight grommet to ensure safe brake light operation._Premium-Grade Rubber Seal_Constructed from professional-grade rubber, this replacement 4" round taillight grommet forms a snug seal on your vehicle's taillights and prevents harmful contaminants from damaging electrical wiring._Compatible With Popular Jeep, Truck & RV Models_Whether your ride is a Jeep, truck or RV, the OLS 4" Round LED Trailer Taillight is made to fit the most popular models. And installation is plug-and-play simple thanks to its user-friendly design._Basic_Brand:_ONLINE LED STORE_MPN:_TBL40XXA1_UPC:_816165023347_Warranty & Certification_Warranty:_1 Year_Package & Dimension_Length (In):_5.50_Width (In):_1.00_Height (In):_5.50