Threaded Screw-on Funnel for 24mm & 28mm Neck (4 to 32 Ounce Bottle) - 3-pack, Polypropylene Fits most any 4 to 32 ounce bottle. Made of polypropylene. Screws on securely, preventing spilling Can be clipped to a larger half-gallon or gallon jug Tip: Use one for each chemical, to keep from mixing products together FREE shipping for orders $50 or more!