Have a set of Mamiya M645 (manual focus - no contacts) Ext#1 + Ext#2 extension tubes for sale - AS A PAIR (saves on postage). Can obviously be stacked if desired. Work fine, look fine, just never need to use. No caps (but not really needed anyway).
Asking price is C$110 shipped by Canada Post normal post anywhere in NA. Payment by PP (no fees) and if in Canada, use EMT (save 3%).