Pro-Graad 4" Diameter x 1/2" Wide x 1/4" Shank XTRA Green Professional Grade Extra Cut Strip & Clean Discs is a powerful solution for heavy-duty surface preparation, featuring a 2-pack of extra coarse aluminum oxide discs. These discs are specifically engineered to tackle challenging tasks such as rust removal, paint stripping, and corrosion cleaning. Notably, they offer compatibility with drills and die grinders with their 1/4" shaft, enhancing their usability and versatility in various applications. What sets these discs apart is their construction, which incorporates aluminum oxide abrasive mineral into an open nylon web. This design is highly effective at removing stubborn surface contaminants, making it a go-to choice for demanding cleaning and stripping jobs. One standout feature of these discs is their ability to not only remove heavy rust, thick paint, and corrosion but also to condition and prep the underlying material. This dual functionality can significantly save time and effort in surface preparation tasks, as it eliminates the need for additional steps in the process. Moreover, the discs are designed with conformable, high-strength fibers that resist clogging and loading. This means they perform consistently well even in challenging conditions and when used on edges. This adaptability and durability make them suitable for a wide range of applications where precision and efficiency are crucial. Pro-Graad Quick Change XTRA Green Professional Grade Extra Cut Strip & Clean Discs offer a reliable and efficient solution for heavy-duty cleaning and stripping needs. With their compatibility with Roloc Holders, incorporation of extra coarse aluminum oxide abrasive, and conformable, high-strength fibers, they are a valuable tool for professionals seeking to remove rust, paint, corrosion, and prepare surfaces effectively and efficiently. Note recommended speeds (below 4500 Max RPM) to prolong the wheel's service life.