• Quick-connect cap adapters for quick and easy port changes • Two-piece open cap and adapter design prevents tube twisting when opening• Polypropylene (PP) caps and adapters are autoclavableLeakproof, PP caps and interchangeable cap adapters provide a wide range of top connection configurations. Each cap is compatible with several adapters allowing you to change and configure carboy top connections based on your application requirements. Designed to be stackable, the caps feature large grips al