Urocare - Standard Top Adaptor for Reusable Leg Bags are the replacement adaptor for Urocare's reusable leg bags. These drain valves are essential to the urinary drainage bag system. Keep some on hand for those "got to have it" moments. Urocare's standard top adaptor features a graduated top with reverse-grip that provides a secure connection for multiple tubing diameters. Each, Box of 10.