5991B Style, High Performance, Clamp-In Tire Valve with Metal Cap. Easy to install in all types of passenger car wheels. Ample threads to accommodate varying wheel material thicknesses. Use with . 453 or . 625 inch diameter rim holes. Chrome plated for a custom look. Sold individually. Tru-Flate is part of the Plows & Edelman group. Plows Manufacturing and Sales Corporation was originally founded by R. G. Plows 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, Plows shifted their focus to developing the tools necessary to service this new mode of transportation. Fast forward 90 years and Plows has become part of Plows & Edelman. Today, Plows & 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.