07-25-2015, 04:05 PM
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CC Member
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Join Date: Nov 2003
Location: New Britain,
CT
Cobra Make, Engine: Size 10 Feet
Posts: 3,011
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Neutral
Sorry, but I don't have any to look at. Probably 3/8", 7/16" or 1/2" hex (assuming it's not a triple-square). You might ask Halibrand.
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