Air-abrasion cavity prep system. Treat without anesthetic and treat on diagnosis and multiple quadrants. Multiple tip sizes and fully adjustable powder and pressure. Small, precise, and minimal powder flow. 0.015" tip is half the size of the smallest bur. Highest rated system by major reviewers. Largest selling unit of all. 1-year warranty.Dimensions: 6-1/2"W x 5-1/2"H x 9"L