55mm Snap Neck 3-Gallon PET Preform is specifically designed for manufacturing 11L water cooler bottles, widely used in offices, households, and commercial dispensers. Compatible with both semi-automatic and fully automatic blow molding machines, this preform supports flexible weight customization to balance durability and material efficiency. Made from food-grade PET, it ensures safety, clarity, and strength under repeated use. The snap neck design allows for quick and secure capping, while optional plastic handles and screw caps provide added convenience for end users. Available in custom colors, this preform is the preferred choice for brands seeking reliable, scalable, and hygienic packaging solutions for the bottled water industry.