Re-run wrote
I got a plug socket from sears years back and it fit perfectly. It is 18mm.
My Craftsmen 6pt.18mm wouldn't fit down that well ,had to use the Ole shop 6pt Snap-on,I'll double check ,the wall thickness twards a 12pt,older craftsmen (20yr)were thinner,So if you go buy ,get the thinner walled socket.
1977 CB750 F2 Super Sport
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Native American from central Cal, Kickstand UP in S.W.Missouri,