just purchased cant w8!

I purchased this tool.I have an old set of original Ping Zing Irons.The grooves on these things were flattened over.I mean in bad shape.Thought I’d try it.Well it took a little work with this tool,but wah lah.I now have a new set of Ping Zing Irons.I now just keep the tool in it’s handy little holder and in my pocket.I just take it along to keep the dirt out of the grooves.Thanks for inventing a tool that can even bring back this old set of favorites. Bayhawk