Crawford by Lehigh single pronged hollow wall tool holder is perfect for storing electrical cords, sporting goods. Use holder on sheetrock, drywall and even concrete. Eliminates the need to find wall studs. Made of nylon and plastic. Unique nylon ball anchor attaches hook securely to hollow wall surface. Available in black color. Each hook holds up to 15-Pound. Includes unique hollow wall anchors and mounting screws. Do not use hooks on hollow walls less than 3/8-Inch thickness. Comes 2 holders per blister card.