Truck Bed Liner Attachment Kit, Hardware Kit For Trail FX Under Rail Bed Liners And Tailgate Liners, Under-Rail Models Allow For Truck Caps, Tonneau Covers, Or Aftermarket Rail Protectors, Tailgate Liners Come Equipped With Cup Holders, Patented No-Drill Installation, GM SIL/SIE HD UR 20+ KIT, Bed Liner Hardware