You may think this is a silly post, but I looked all over for this. On the boat, all the old snap fasteners are popping off. I tried the standard tools, but the snaps would pop off again. This tool splits the central post, instead of just curling it. It splits it like an apple cutter, and secures it. I am so happy!
ps. tale of the dock fish. We hooked this huge fish, that I couldn't pull in, about a foot long, and then this HUGER fish swam up to it and looked like it wanted to eat it! Nobody wants to look under the dock with the snorkel! I keep fishing for it.