Easy zinc puller
Often zincs get hard to remove. The brass plug comes out but the zinc is stuck inside the cooler. I use an all thread coupling nut of the thread size as the zinc. Screw it in onto the zinc and wiggle it around with pliers and soon enough you can pull the old zinc. Grinding off the points on the nut adds clearance.
I cant get the link to work so if folks don't recognize the term google all thread coupling.