[surfbeast]

It's reusable, just a paper gasket. This is super easy! If you have the right tools. I used an air die grinder, you can rent one cheap or use a electric one. A drill won't get you enough RPMs. use the sanding wheel that looks like sandpaper squares glued to a bit. some call it a flapper wheel. Mine had sanpaper with scruber pad inbetween the sheets of sandpaper. Works wonders!