The ‘SET EXTENSION IV 21IN ADD-ON W/CHECK VALVE, 2 MICROCLAVE(R), CLAMP, DRY SPIKE ADAPTOR – B33335’ is a comprehensive IV extension set designed for medical use. It includes a 21-inch add-on with a check valve for precise control of fluid flow. The set also features two MicroClave(R) connectors, a clamp for secure positioning, and a dry spike adaptor for convenient attachment. This product is sold in cases of 50, ensuring you have a plentiful supply for your medical facility.