The Gallon Hand Pump is the perfect hand pump. The Gallon Hand Pump is the easier way to pump your favorite products out of a gallon and into smaller size containers. The 1 ounce gallon pump dispenser fits perfectly to reduce spillage and is threaded for the Chemical Guys 1 gallon container. This hand pump will also fit most gallon size containers and all containers with a 38/400 thread size. The Gallon Hand Pump fits one gallon natural HDPE and PVC round handle jugs and one gallon natural HDPE smooth square handle jugs. The precise pump regulates the amount of product dispensed with every pump, making it easy to dilute your favorite products. This hand pump dispenses 1 ounce of product per stroke.