The Standard Abrasives Quick Change TR A/O 2 Ply Disc 592211 is a high-quality sanding disc designed for metalworking applications. With a 1" diameter and 240 grit ANSI rating, this disc offers efficient sanding performance. Made with aluminum oxide abrasive material, it ensures durability and effective grinding. The TS/TSM Turn-On/Off disc attachment system allows for easy and quick disc changes, making it a convenient and effective tool for various metalworking projects.