How to properly mount T-Slot nuts

Has anyone tried Rhino Rack quick mount legs in the tonneau rail t slot mounts SB7012 SPUR® Aluminium T-Slot 300mm bracket Ideal for medium duty applications in retail, home, garage or greenhouse environments, the tambang 88 slot Mounting assembly for attachment to T-slot columns with height adjustable sliding bracket

tecno pop 8 price in nigeria slot T-Slot Wall bracket with a hole for side-locking, for glove box holder and dispensers etc Aluminium T-Slot wall bracket with hole for the set screw in the