BESTWYLL Electrical T Slot Pickup Truck Bed Electric Retractable

Roll N Lock with new T-Slot rails on Nissan Titan , review tonneau cover with t slot I'm also looking for a rolling tonneau with the t slots, but right now we are out of luck Hopefully something comes out soon I already tonneau covers with tslot tracks Any recommendations for a Tonneau cover that is soft-rollup and has t-Slots? Not looking for the Retrax since it's not good in snow ice

what is the slot in football Link to purchase American Roll Cover truck-covers-usatruck