Ya thats right. 37 is hard to find around here

 

stock sizes you will find are 36 mm and 38 mm.
I had to either order the 37 mm from arctic cat or just use a 16 sided 36 mm. That one works fine.

 

Will 1 1/2" work?

 

I actually think I used 1 7/16th" and it worked fine.

 

Oops. I meant 38 mm. Sorry!
36 mm is too tight and you wont get it off.