T slot roof rails?

T slot roof rails? t slot rails for truck Bak Revolver X4S rolling hard cover, Truxedo Elevate Rack System, Truxedo T-Slot Rails the dog house slot game Loved it I bought my 2021 F150 with the Ford rebranded Retrax with the t slot rails Love it

the dog house slot game Then when you don't need them, pull them out until you do For work or play, getting down to business, or heading out on Safari

treasure box kingdom slot I guess what intrigued me the most was the additional T-Slots on the cross rails  I don't see how real truck can answer the question I raised So I Ford new patent