FDA-approved for intraoral use. Lightweight, ergonomic design. Fully autoclavable unit. Easy to install to standard air line, and includes standard hook-up components. In-line stopcock for quick disconnection to dismantle for storage or transport. Easily replaceable tungsten-carbide nozzle. Index finger-control valve operation, suitable for right- or left-handed operator. Unique ratchet-controlled tip rotation avoids the fuss of loosening and retightening locking collars. Increases bond strength by more than 300% to all dental materials. 1-year warranty.