Step & Stop Drills With DLC CoatingDSI Step&Stop drills are the most efficient instruments for precise drilling. These drills are uniquely built with each drill leading the following for fast and accurate drilling. The drill dimension and shape reflect the closest match to the implant geometry. It benefits from a built in integral stopper, perfect balance, and an optimized cutting edge with a Diamond like Carbon DLC coating. DSI Step&Stop drills adjust the socket to reduce the pressure