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This key square hole size is 3.00 and 1.75mm for use with winding clocks. There are NO EXCEPTIONS!
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1/8" SQUARE FEMALE.
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This key square hole size is 3.25 and 1.95mm for use with winding clocks. There are NO EXCEPTIONS!
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Good Quality brass double ended key Number 6. The size of the small end is 1.75 mm square hole with a 5 mm shaft. The larger end is 3.75 mm square hole with an 7 mm shaft.
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Style 10Pcs Skeleton Keys. High Quality: The skeleton key is made of high grade zinc alloy material, smooth surface, anti-corrosion, anti-oxidation, sturdy and durable. UNIVERSAL SKELETON KEY SET. Unlock the possibilities with our universal skeleton key set, designed to fit various cabinet doors, roll top desks, and grandfather clocks.
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For your consideration we have a used Tall case or grandfather clock crank key. It is brass with a wood handle. It has scratches and discoloration, but overall it's good. Sold as is. If you are just trying to fix a watch or clock without knowledge of how to do so, we suggest that you seek out professional help.
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