AviationTech
Well-known member
For awhile now I've been using these old water pump wrenches on fluid lines and filter bowls on aircraft. They are quite handy, they get in to really tight spots and don't slide off the fitting cause of their flare nut design. Anyone have any info on their value? They range in size from 3/4"- 1-5/8'. There is 18 wrenches total