TrippNT's Bottle Holders organize, stabilize and secure 3 bottles. Made from highly chemically resistant polyethylene plastic these holders are designed for most 500 mL bottles that will fit a 3-1/8 inch diameter hole. Secure with included hardware and keyholes. Ideal for wash bottle, top heavy plastic squeeze bottle and any cylindrical vessel under 3-1/8 inches in diameter. 11.25 x 3 x 4 inches (width height depth); 0.3 pounds.