Listed as “for parts or not working” due to rust/corrosion, the Mac has one broken band.
Aircraft Spec. Inc., Lapeer Michigan, USA (huge)
Mac Tools, USA (one broken band)
unbranded single band
Lisle, no model #
Lisle #33500 piston ring installer/remover pliers
These are oily and will be shipped that way.
With a little resurfacing, totally usable.