SureTight air/water syringes feature a unique interlocking system that guarantees a new and secure seal with every new tip. Includes a single water channel with 5 separate air channels that ensures perfect separation of air and water to prevent mixing. Compared to Kerr Seal-Tight® ● Guarantees new and secure seal every time without hassle ● Strong enough for easy cheek and tongue retraction ● Five air-core design for even air flow and increased efficiency ● Rounded tip for extra patient comfort