This contra-angle handpiece incorporates an internal irrigation system for the instrument, unique in the world. The instrument’s grip is not hindered by the irrigation line. The jet of physiological liquid is projected in the same axis as the drill, providing perfect cooling, especially during the placement of implants using surgical guides. The CA 20:1 has a miniature head, while remaining the lightest on the market. Its axes and gears have been machined from a steel that is characterized by its high resistance to saline solutions.