Stromberg carburetor metering jet wrench. The hole is .218 wide and .281 long. This wrench will fit the larger Stromberg jets with a 7/16-24 thread. For use with jets P-19442, P-17004 and P-22660 as commonly used on mid 1930s through 1955 Packard, Cadillac, LaSalle, Buick, Dodge, Studebaker, Nash, Rolls Royce and others.  For use with…