Curt 60619 Towing Wiring Slotted safety chain holes allow for proper alignment with truck bed rails Accepts up to 30,000 lbs. GTW and 7,500 lbs. vertical load limit Removable chrome-plated 2 5/16" trailer ball fits most gooseneck trailers Double locking pins for superior trailer and trailer ball security One-person installation requires no welding or truck bed removal