The American Sander S7R Edger Pad 21066A is a professional-grade replacement disc designed specifically for floor sanding equipment. This heavy-duty pad features a durable combination of metal and rubber construction, ensuring longevity and consistent performance. The pad's distinctive circular design includes concentric grooves that optimize dust collection and maintain even pressure distribution during sanding operations. The metal backing plate provides stability and support, while the rubber component offers the necessary flexibility for smooth operation. Four mounting holes are precisely positioned for secure attachment to compatible sanders, and the central threaded mount ensures proper alignment. This replacement disc is ideal for professional flooring contractors and DIY enthusiasts who demand reliable performance from their floor sanding equipment. The robust construction makes it suitable for both residential and commercial flooring projects.