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Which chuck key ?

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Max Power

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Is there any way to tell which chuck key a Jacobs chuck requires.
Its on a Startrite pillar drill so not new
 

marcros

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Or buy one of the cheap 4 in 1 things from eBay. It will be useless but the one I had was marked with sizes on it. Then buy a better version of the one that fits.
 

SteveW1000

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Depends what model it is. I've two Startrite Mercury drills and they have a Jacobs No33 chuck. Checking on line it seems to be a K32 key for this chuck.
 

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