[Lil' Lavery]

Originally Posted by Andrew Schreiber

Yeah, cuz 8mm w/2mm isn't weird...

8mm/2mm at least meets the rule of thumb that a keyway width is 1/4 the diameter of the shaft. And thus broach manufacturers will make broaches and bushing combinations in that size.

Originally Posted by Andrew Schreiber

Though AM does sell an adapter to go to 1/2" with a key http://www.andymark.com/product-p/am-0996.htm might help but 1/2" w/ key is still kinda odd.

I'm aware of that adapter, but unfortunately brass shaft adapters aren't meant to handle shock loads (like those experienced when crossing defenses in Stronghold).