Ideal for fine contouring and finishing of enamel, composites, compomers and porcelains. Micrograined aluminum oxide grit. Designed for fine contouring on enamel and composites. With micrograined aluminum oxide grit. Vibration-free function. Comes in three shank variations. Dura-White Stones feature micro-grained aluminum oxide grit, making them ideal for sharp contouring and finishing enamel, composites, glass ionomer restoratives, and porcelains. They are available in friction grip (FG), handpiece (HP), and contra/right angle (RA/CA) shanks.Guaranteed durability and vibration-free performance.