The bung wrench is an industrial tool which is typically used to open 55-gallon drums. When a 55-gallon drum is unopened the contents could be under great pressure. If a drum lid is taken off without precaution and the proper tool the pressure may escape suddenly and violently, causing injury to a person. We offer the top of the line bung wrenches. You will not be disappointed in our quality products. Call us anytime for questions about which product is right for you.