Tonno Pro 42-499 Utility Track Installation Bracket Kit for Tonno Fold or Hard Fold for 05-15 Nissan Frontier Utility Track Installation Bracket Kit for Tonno Fold or Hard Fold for 05-15 Nissan Frontier Use this adaptor bracket kit if you have the Nissan Frontier Utility Tracks installed on your truck bed. This allows the Tonno Pro Tonno Fold or Hard Fold Tri-folding Cover to to be easily installed.