Metric Chuck Key?

I picked up a Chinese drill chuck cheap today at the flea market. The chuck is a 5mm-20mm. I thought that I had a suitable key for it in my stash, but I don't. I guess I will have to buy one. Does anyone know what size chuck key fits a 5-20 chuck?


Jay Cups

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measure the hole in the chuck where the tip of the key fits, and click on

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up tip diameter of key with diameter of pilot hole.

NB: These are standard Jacobs keys and your Chinese chuck may be different.

Unka' George [George McDuffee] ============ Merchants have no country. The mere spot they stand on does not constitute so strong an attachment as that from which they draw their gains.

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F. George McDuffee

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