Matte Finished Polycarbonate or Aluminum Rolling Cover Replacements (center section) for your Retrax Series Truck Bed Cover. Includes: one rolling cover replacement RetraxONE and RetraxPRO Series DO come with a usable canister. PowertraxONE and PowertraxPRO will NOT come with a usable canister. Fits All PowertraxONE MX, PowertraxONE XR, PowertraxPRO MX, PowertraxPRO XR RetraxONE MX, RetraxONE XR, RetraxPRO MX, and RetraxPRO XR Applications | Retrax Replacement PowertraxPRO Aluminum Rolling Cover 94244