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AntiqueBen
Well-known member
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- Aug 4, 2021
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- 1,438
I've also noticed the opening on both appears to be 15/16", not 1" like it was advertised. If these were meant to be used directly on the fastener, then the only way to change sizes would be to replace the entire gear out for another size. And I don't believe there was ever such a thing as a 15/16" drive, so maybe there was the option to order these in different sizes depending on what your job called for.