Detail Description: The Roll-N-Lock M-SERIES XT combines the M-Series retractable truck bed cover with our T-slot integrated MaxTrak System that allows for unique customization to your truck bed to meet your individual needs. The Roll-N-Lock M-XT is a secure, robust vinyl-over-aluminum hybrid cover design dedicated to delivering four-season protection and optimal bed security. It tackles durability while remaining exceptionally easy to operate with its unique frictionless construction and insulated grip handle. Simply use its key to unlock the cover and begin to open towards the cab as it retracts into its compact canister. The M-XT can open, close, and lock without ever opening the truck’s tailgate, and with multiple latching positions, it provides unmatched convenience with quick access to your bed and gear. Features and Benefits:Lockable Vinyl-Over-Aluminum Low-Profile Design Maintains A Sleek Truck Bed Cover Appearance Aluminum Undercarriage That Has A Patented, Contoured Hinge Design For Frictionless Rotation And Theft Protection Features A Torsion Spring Enclosed In A 3 Inch Aluminum Casing, Along With Patented Contoured Hinge Design For Frictionless Rotation To Enable Effortless And Secure Operation Storage: Most Compact Canister Of Any Other Retractable Cover Sitting Just 7 1/4 Inch Deep And Featuring An Aerodynamic Housing Lid, The A-Series XT Preserves Your Truck Bed's Cargo Space Ease: Patented, Ratch-Style Latching Mechanism Enables The Cover To Lock In Multiple Positions Adaptability: M-Series XT Pairs M-Series Cover With The New MaxTrak Rail System, Mount Accessories Using The T-Slot Rails Easy To Install Limited 3 Year Warranty Attributes:Type: Soft Manual RetractableFolds/Panels: Not ApplicableHinged At Front: Not Hinged In FrontProfile: Low ProfileColor Group: BlackColor/ Finish: Black MatteMaterial: Aluminum/ VinylLocking Type: Key LockCompatible With Ladder Rack: Not Ladder Rack CompatibleCompatible With Headache Rack: Not Compatible With Headache RackBed Side Rail Mount: Inside Rail MountTool Box Info: Not Compatible With Tool BoxWith Lights: Not ApplicableInstallation Type: Clamp-OnDrilling Required: Drilling Not RequiredAdditional Info1: Bed Cap Compatible, With T-Slot RailsEstimated Install Time (Hours): 1 Fitments:2015-2020 Ford F-150 6.5 Ft. (78.9 In.) Not compatible with OE cargo management tracks