S and S coupler wrench

I misplaced my wrench so I made/printed one. Not sure how long it will hold up but it grips the couplers with 3 teeth instead of 1.

44mm side is for use with a ~44mm coupler/35mm(1 3/8") OD Tube
42mm side is for use with a ~42mm coupler/32mm(1 1/4") OD Tube

The teeth might need a little filing depending on your printer. Hole should fix a standard hex bit.