RetraxPRO MX Retractable Truck Bed Tonneau Cover | 80362 | fits Super Duty F-250-350 (08-16) 6.8' Bed Incredibly strong and easy to use - Features industrial-strength aluminum construction and opens and closes easily with our exclusive use of sealed ball bearings Featuring a low profile design and a tough matte finish that resists scratching Lockable in any position - Secures your valuable cargo or stays open whenever and wherever you need it Unlimited hauling flexibility - Great for 5th wheel towing. Improves mileage by up to 10% UV Protected; No Fading, No Maintenance