BAK Industries 80342RK Revolver X4s with T-Slot Rails, Hard Rolling

Angry Elephant Rack System mounted on Elevate TS Rails, with t slot rails for truck Pair of Side Rails for the HD Truck collection; Great for attaching LoadStop, T-Slot T-Slot Mounted Loads Stops Integrated tie-down points Up t slot fixture plate Engineered to fit your vehicle; Tonneau cover shields the cargo in your truck bed; Patented vinyl-over-aluminum construction for maximum strength and

twin slot rail I saw a more simple T-slot sliding truck bed at crafty amigo, but since it's a 3D design I can modify it! You just gave me the idea of