Bar5F Gallon Pump Dispenser, Heavy Duty (Pack Of 3) Fits Most Plastic or Glass Gallon Container with 38/400 Thread (Container Not Included). Convenient, Durable, Sturdy, and High Quality Pump screws securely onto most gallon container's. Top Twists Closed for When Pump is Not in Use preventing spills and mess. Precision Pump Dispenses Approx 1 Fl ounce of product per stroke.