Universal BedXtender HD Tonneau Cover Spacer Kit (AMP74609-01A)The Amp bed extender will mount to the rear of your truck's bed to provide an enclosed area around a lowered tailgate. It's great for longer cargo such as dirt bikes and ATVs as well as your weekend camping supplies. The BedXTender can also be flipped back into the truck bed for easy storage as well as offering a nifty storage area with the tailgate closed. The AMP Research truck bed extender is constructed of 6063 T6 aluminum material with glass