These discs have an extra-thin profile for precise finishing and polishing in areas where access is a problem. Easy-to-use system designed to create high-luster restorations that offer lifelike esthetics. Discs are color coded to allow for easy identification of grit sequence. Pop-on disc technology designed to save you time. Extra-thin (XT) discs allow for easy access to interproximal surfaces while offering a slightly stiffer disc. Suggested Application: Finishing and polishing composite, ceramic and glass ionomer dental restorations.