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 drop forged from steel bar. These wrenches are available in fractional sizes from 3/4" through 2-9/16" with Chrome or Industrial Black finish.