Protects Your Boat During Loading – Carpet-covered bunkboards gently cradle your boat, helping prevent surface damage during trailering. Durable, Pre-Galvanized Steel Construction – Built with corrosion-resistant steel tubing for long-lasting strength in marine environments. Adjustable Fit for Custom Installation – Mounts 19" above the trailer frame with side adjustment out to 11" for a secure, tailored fit. Compatible with Most Trailers – Fits trailer frames up to 4-1/4" wide; vertical supports should be spaced 3' to 4' apart for optimal support. Easy Installation with Hardware Included – Comes with all necessary mounting hardware; sold as a pair (trailer not included). Covered with marine-grade carpet these bunkboard-style boat guide-ons cradle your boat protecting it from scratches and dings. Mounting tubes are pre-galvanized steel. Mounting hardware is included with the Overton's boat guide-ons. Fit up to 4-1/4'' trailer frame. Mount 19'' above trailer frame with side adjustment out to 11''. Vertical supports should be placed 3' to 4' apart to allow clearance for fender and to allow support for the bunkboards. Sold in pairs. Trailer is not included. Features:Fit up to 4-1/4'' trailer frameProtect against scratches with these guide-onsCenter your boat on your trailerGuide-ons are covered with marine-grade carpet