CarGo Pal Organizer Blocks Set of 2 (Apply Wool Carpet) Multipurpose Auto Trunk EASY Storage/Organizer Kit ,2 units/box Every Cargo Pal unit's bottom is equipped with high strength fastening hook which is useful to be fastened to wool trunk's carpet. The hook and Cargo Pal unit is integrated, not secondary operation of glue. It has super steadiness and durability. Two compartments, organize emergency equipment, sports gear, groceries, and auto supplies. REAO BEFORE PURCHASE: Cargo Pal is only available to WOOL trunk's carpet