Free Flow Supersized Plastic Bottle Pourers - Pack of 6 - Fits Unusually Large Neck Bottles Made of clear plastic with amber plastic cork. No collar design. Free flow pourer. Designed to fit unusually large necked bottles. Brands that this pourer fits include: Crown Royal 1.75 liter, Cuervo 1800, and Three Olives 1.75 liter bottles.