It's a Pace Edwards Switchblade. The exact part number you need will depend on the exact year/make/model/bed length of your truck. Be aware that the canister the cover stores in when open will require that a toolbox be moved rearward so the canister doesn't interfere with the toolbox lid. www.etrailer.com/Truck-Tool-Box/UWS/UWS08298.html
![Truck Toolbox and Tonneau for Fifth Wheel [Full Time RV Living]](http://i.ytimg.com/vi/SmoZx61dGrc/mqdefault.jpg)
What kind of retractable roller cover that you used
It's a Pace Edwards Switchblade. The exact part number you need will depend on the exact year/make/model/bed length of your truck. Be aware that the canister the cover stores in when open will require that a toolbox be moved rearward so the canister doesn't interfere with the toolbox lid.
www.etrailer.com/Truck-Tool-Box/UWS/UWS08298.html