Martin Tools 37mm wrench

30? Angle Service Wrenches are made in the U.S.A. (Also referred to as Pump Wrench) A special purpose Thin Head Single End wrench with a 30 degree angled slotted opening. The thin pattern helps with use on jam nuts and in confined areas. They are generally used for servicing pumps; glands; valves; etc.30 degree Service wrenches are manufactured from steel bar. Metric sizes from 19mm through 65mm are available in Chrome finish only.