Don't waste time making your own tool like I did. I welded a few nuts to a grade 8 bolt with a 14mm head. The head twisted off.

Went to Autozone (here in Saginaw we call it "Vatozone") and picked up a set of 1/2" drive bits, 12, 14 and 17mm for $11.95.

bah-dah-bing done.

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1972 W115 220D/8 SLS, Coffman Starter "Ümläüt"

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