Heavy-duty double end 12-point box wrench. With it you can safely loosen or tighten a nut then fast run the nut without lifting the wrench or switching to another tool.
Turning over the wrench reverses the direction. Laminated construction. Chrome plated.
Nominal opening sizes – 5/8” x 3/4”
Small opening end head O.D. – 1.31”
Small opening end head thickness – .50”
Large opening end head O.D. – 1.44”
Large opening end head thickness – .50”
Length – 8-1/8”
Weight – .64
Pat. No. 2,500,835. In good vintage condition, and Made in the USA!