This is one of our best pumps. It is easy to use and lasts a long time. This has a 41” long body for 55 gallon drums. Each stroke can produce any amount up to 22oz per stroke. This pump is constructed with stainless steel material and PTFE seals. This allows this pump to handle heavier chemicals and aggressive liquids. The pump can also move a variety of other liquids, even ones that are thicker than water. Examples would be detergents, lubricants, chemicals, alcohols and oils. This is a sturdy, well built, industrial grade pump for everyday use.