I have a 39mm (1.5") around here somewhere but I can't find it..
Drilling for 3/4" bulkheads right?
All I can find in the cabinet right now is the 45mm for 1" bulkheads.
You can borrow that one if you want.
If you can wait 2 weeks order a new one from
www.richontools.comIt'll cost you about $5.30 for a 39mm shipped and take 2 weeks to arrive from Hong Kong.
http://www.richontools.com/catalog/i630.html