Really hold up really good!..I made the mistake of pushing hard down on one and it lost its shape a little...but still usable!..now I let the machine do the work with small pressure..no problems!..I also cut one to use on my multitool triangle sander pad..So I can cut the Dura Gold 3" round Disc to fit in tight spaces on headlights!.I know you can purchase the triangle paper..but its just I don't need to use the tool very much only for off set narrow edge headlights!
Good stuff!..Good price!