CE Smith 27672 Pontoon Roller Guide-OnsBunk trailers are the trailer of choice for transporting pontoon boats. The bunk trailer has a much wider track than the more conventional scissors trailer. Trailering a pontoon craft to and from the water this way requires skill, as the width commands more of any roadway lane. Additionally, boating forums frequently address the issues that arise from using a bunk trailer. One of the ways to circumvent problems loading and unloading your pontoon from a bunk trailer is by installing pontoon trailer roller guides. These pontoon rollers are relatively easy to install and facilitate the loading and unloading of your vessel. The CE Smith Pontoon Roller Guide On is perfect for bunk style pontoon trailers, with either a box, channel, or I-beams up to 3" wide by 4-1/4" tall. Minimum friction rolling action easily guides the pontoon boat onto the trailer. Its height is 25-inches above the trailer frame. Be sure to mount these pontoon trailer roller guides so that the roller bunks are 2-3" from pontoons on a trailer frame cross member.Pontoon Trailer Roller Guides Include: Zinc Plated Hardware; Galvanized Steel Construction; U-Bolt Mounting Brackets; Includes two rubber roller bunks; Fits frames up to 3" wide and 4-1/4" tall; Made in the U.S.A.;