COMPATIBILITY AND DESIGN: This 10-bolt universal adapter kit is designed for most full-size trucks, excluding the Elite/Signature series by REESE. It eases the installation of fifth-wheel trailer hitches and is compatible with models 30035, 58058, and serves as a replacement for REESE 30439 EASE OF INSTALLATION: The kit includes spacers that ensure the correct 1/2" spacing between the truck frame and bed, facilitating easy installation and preventing damage during bolt tightening. It's a universal mounting solution for full-size trucks DURABILITY AND QUALITY: Constructed from high-quality steel, the kit is robust and corrosion-resistant due to its black powder-coated finish, which enhances its longevity in various weather conditions PACKAGE CONTENTS AND UPGRADE MANUFACTURING: The kit comes with universal brackets, eight 3/16" spacers, and necessary hardware. It's made from superior Hadfield steel, undergoes high-frequency quenching, and employs CNC manufacturing for precision and durability INSTRUCTIONS AND FUNCTIONALITY ENHANCEMENT: The kit includes installation instructions for proper fitting of fifth-wheel rails, strengthening the truck frame, maximizing truck bed functionality, and ensuring secure anchoring of the hitch for towing. It replaces worn-out or damaged hardware, ensuring a stable and safe connection INSTRUCTIONS AND FUNCTIONALITY ENHANCEMENT: The kit includes installation instructions for proper fitting of fifth-wheel rails, strengthening the truck frame, maximizing truck bed functionality, and ensuring secure anchoring of the hitch for towing. It replaces worn-out or damaged hardware, ensuring a stable and safe connection