SandBlaster 4-1/2 in Clean N Strip disc can be used on many surfaces and are great for removing and cleaning rust, paint and many other coatings. The 3M SandBlaster angle grinder Clean N Strip discs can be used on many surfaces. Use them to remove dust, paint and many other coatings. Their open web design helps prevent surface distortion or gouging. Designed for fast coating removal leaving a clean and smooth surface finish.