NTI Diamond Disc Double Sided Handpiece D911HD-220 22 mm Each Highly flexible design for separation and contouring. Ideal for anterior and posterior teeth veneers. Uses less heat for optimum performance. Minimizes breaks and cracks. NTI Superflex Diamond Disc integrates the Unimatrix Bonding process to separate and contour ceramic and composite veneers on anterior and posterior teeth. Each disc has a 44.5 mm x 2.35 mm HP shank for enhanced fabrication and contouring of dental restorative materials.NTI Superflex Diamond Disc comes individually packed for safety and convenience. Available in various grits, sizes, and shapes.