3M™ Sof-Lex™ extra-thin finishing and polishing discs, 1/2" diameter, coarse, 8692C. Features: - Flexible discs with aluminum oxide coating. - Unique, flexible shape easily adapts to irregular, convex and concave tooth surfaces. - Effective at reaching anterior and posterior restorations. - Quick, pop-on/off disc interchangeability. - Extra-thin (XT) discs allow for easy access to interproximal surfaces while offering a slightly stiffer disc.