41" Long base rails provide the attachment points for mounting your fifth-wheel trailer hitch in your full size truck bed. Designed for use with Reese custom-fit outboard brackets (sold separately). Quick and easy installation with full truck bed access. Fifth wheel mounting rails only. (10 bolt design). For use on all fifth wheel hitches except Elite (formerly Signature Series). Sturdy, black powder coated steel resists corrosion. Outboard brackets required for installation Extended-length base rails Part #: 58058 | Cequent Reese Universal Outboard Base Rails for 5th Wheel Trailer Hitches in Black