I have used them for cutting very soft paints and they are of good quality and does their job well. The only complaint I have is that while on of them were still attached to the machine I was a bit sloppy and laid it down so that the pad was pressing against a plastic box on one spot. This has caused a permanent weak spot in the foam and as I discovered, makes it impossible to use with the machine again, since it doesn't stick properly. I acctually flew off during working on the paint. I was lucky enough not to bang the machine into the car, but it was close. I didn't expect the pad to be that sensitive. But it is, so one really have to be careful that is free of pressure, at least form uneven pressure. Then it will disform itself.