The unique finger-control valve operation makes this unit simple to use for both right- or left-handed operators. 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: operator can easily dismantle for storage and transport. Easy-to-replace tungsten-carbide nozzle. 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.