These are solid, easy to use hand stroke pumps that will transfer liquids from an industry standard 15, 30 and 55 gallon drum. They can produce any amount up to 8oz per stroke and are self priming. This style has two discharge options, a fixed spout or a flexible hose and is comes with a connection for drums. This is a good design and dependable. The PVC material can move a variety of liquids such as alkalizes, detergents, waxes, oils and most mild acids. This is industrial grade and built for everyday use.