Set includes vented bag spike, 90cm (36in) tubing and bi-directional valve. Use for various flushing needs - BAL, joint, ear, wound, ovum pickup. The bi-directional valve allows for repeat aspiration from the bad and controlled flushing without opening the system. Eliminates the need to pre-fill syringes. Spike the flush medium, attach syringe to female luer of valve, fill syringe, flush, then repeat the process.