Tru-Flate s dual foot air chuck features an angled head and chrome plated, all metal construction - built to withstand the toughest home garage or shop use. Not for use with inflator gauges - chuck has its own shut-off valve and will not work with inflator gauges which are intended to regulate the air flow. 1/4-18 female NPT inlet thread. Tru-Flate is part of the Plews & Edelman group. Plews Manufacturing and Sales Corporation was originally founded by R. G. Plews in 1927. At that time, the railroad industry was the primary focus for the companys extensive line of oil cans. As the transportation industry went from trains to passenger cars and trucks, Plews shifted their focus to developing the tools necessary to service this new mode of transportation. Fast forward 90 years and Plews has become part of Plews & Edelman. Today, Plews & Edelman is a leading designer, manufacturer and distributor of a broad range of automotive parts and tools sold to the vast majority of mass merchant, retail auto parts stores and wholesale automotive parts and industrial distribution outlets, worldwide.