The McKesson Irrigation Tray has all components packaged in proper order for maximum efficiency. The Piston syringe offers uninterrupted action in a single-hand technique. This disposable syringe with thumb ring is designed to minimize hand slippage and subsequent contamination of barrel or solution container. The barrel features large, raised, easy-to-read graduations, which are calibrated in both oz and cc. The elongated tip has an extra-large orifice for better removal of clots and mucous shreds.