Trailer guide pads are made with waterproof coated 600-denier polyester for long-lasting protection. Guaranteed not to fade for 3 years, these pads include capped ends for a finished look and ensure the boat's rub rails always hit the guide pads. 2-3/8" inner diameter. Fit most trailers with PVC posts with 2" - 2.5" outer diameter. Capped ends for a finished look Fits most trailers with PVC posts | Heavy-Duty UV-Capped 36" Trailer Guide Pads, Pair