The Revolver X2 hard rolling truck bed cover features exclusive automatic rotational locking rails that secure the cover the entire length of the bed on each side. This hard aluminum roll-up cover easily rolls up with one-handed operation and allows use of every inch of the truck bed without blocking your rear window. This cover does it all with unrivaled strength, security and style.\nRevolver X2 Hard Rolling Truck Bed Cover - Rail Mounts Near Top of Bed Rail - Rails Can Be Lowered Using Drop Down Brackets - 2007-2021 Toyota Tundra 5' 6 Bed without Deck Rail System without Trail Special Edition Storage Boxes\n2007-2021 Toyota Tundra 66.7 Bed Without Deck Rail System Without Trail Special Edition Storage Boxes, 2021 Toyota Tundra 1794 Edition 66.7 Bed Without Deck Rail System Without Trail Special Edition Storage Boxes, 2021 Toyota Tundra Limited 66.7 Bed Without Deck Rail System Without Trail Special Edition Storage Boxes, 2021 Toyota Tundra Nightshade 66.7 Bed Without Deck Rail System Without Trail Special Edition Storage Boxes, 2021 Toyota Tundra Platinum 66.7 Bed Without Deck Rail System Without Trail Special Edition Storage Boxes, 2021 Toyota Tundra SR5 66.7 Bed Without Deck Rail System Without Trail Special Edition Storage Boxes, 2021 Toyota Tundra TRD Pro 66.7 Bed Without Deck Rail System Without Trail Special Edition Storage Boxes