these pliers look useful for many things apart from their core use of replacing rubber washers to S30 valves, (ever tried to do this with bare fingers? you'll find it fumblingly tricky!). Having said that, I can't think of another sensible (and printable!) use for them right now, apart from spreading ones navel or someone else's to give it a de-fluff!, can you think of any other essential uses for this tool that stretches a flexible rubber ring to over 1" diameter or more, apart from the obvious? please let me know!