I have 3 lug wrenches for my 59, one is a GM service replacement with USA cast into it. The 2 other ones I have have the 'O' cast in the head and fit the description in the JG, but the size is 13/16" not the 3/4" lug nut that are on the car. The parts book shows part# 358501 with a 7/16-20 thread, but no head size. Issue #2 is that the tire board bolt head 3706327 is also 3/4", but it's a repro. What is the correct size for the wrench head and or the nut/bolt head size. One of the supply house indicates the lug nut as #358501, but is probably another marketing ploy.

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