JDMSPEED Hard Tri-Fold Tonneau Cover For 99-18 Ford F250 Super Duty 6.5FT Bed. The Surface Layer is Made of Fiberglass Reinforced Plastic Fiberglass Reinforced Plastic Provides Superior Scratch and Impact Resistant It Allows for Easy Opening and Closing Due to its Tri-Fold Design 350lbs Surface Load-Bearing Capacity Slim Design to Reducing Weight Rubberized Edges to Seal Locking Strap Feature to Keep The Panels in Place While Completely Open Clamps Included for Attach Directly to Your Truck Bed Flanges Require Drilling to Attach Fittings Protect Your Cargo From Dust, Snow, and Ring. Hard Top Tri-Fold Tonneau Cover. Easy to Install With Included Clamps. Minor Drilling Required to Attach Fittings.Increases Trucks Aerodynamics at Speed. Keeps Truck Bed Dry and Secure. Adjustable Tension for the Perfect Fit. Locking Strap to Secure Cover while Folded Up and Driving. 1 X Tri-Fold Hard Tonneau Cover. Hardwares as Shown in the Picture Above. 99-18 Ford F-250 SD F-350 SD F-450 SD with 6.5Ft Fleetside Bed.