Fitment: Replacement 276288 Adapt to J-36 and other multi-brand sliding system, perfectly correct the slide misalignment problem. Please check your RV's model manual before purchasing to ensure a seamless match to the original equipment Specifications: Condition: 100% Brand new aftermarket item Feature: Nylon rollers and reinforced steel plate structure, load-bearing performance increased by 40%, eliminating jams and rattles, and realizing easy one-finger operation of sliding out/retracting, so that the extension of the caravan is as smooth as silk. 200kg single load capacity + galvanized rust-proof steel plate bracket, passed salt spray test, no fear of rain, snow, sand and dust erosion. Package contains: 2 pack rv slide rollers