Bolt size? M19?

Can someone tell me the exact specs of the standard wheel bolts please?

Length etc

Trying to sort out my adapters for my crazy plan lol

I managed to get this? Does this make sense to anyone?

14 x 1.5. B13 :confused:
 
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Cool nice one mate, just need to get back to this guy now, and see if he can skim the rims aswell to try increase the offset a touch
 
M14 thread diameter, 1.5mm pitch and 19mm hex head. I think the length of the standard thread is 25mm but best double check that