Features Powerful Electric Motor With Smooth Operation is Provided by Electromagnetic Brake And Locks The Cover Into Any Position Over the Rails, No Lock And Key Actually are Required Easy Remote Control Operation From As much as thirty ft. Durable Black Powder-Coat Finish On Rigid Aluminum Panels Patented Silicon Weather Hinge Gives a Tight Seal Between The Aluminum Panels Drive System Release Lever Provides Cover Operation If Of Lost Power Low Profile, Gas is Saved by Aerodynamic Design No Drill, Clamp In Design For Installation In Approximately one hour Type - Power Retractable Material - Aluminum Used With Bed Caps Used With Bed Rails Finish - Powder Coated Color - Black Locking Type - Lockable Using Tailgate Handle Lock Installation Type - Clamp On Fits - 2014 2015 Chevrolet Silverado 1500, 2015 2015 Chevrolet Silverado 2500 HD, 2015 2015 Chevrolet Silverado 3500 HD, 2014 2015 GMC Sierra 1500, 2015 2015 GMC Sierra 2500 HD, 2015 2015 GMC Sierra 3500 HD...