Shower Flow Reducer Limiter Set - Up to 70% Water Saving 4 L/min Shower hose water flow limiters set. Special overlay, being mounted in tub mixer or shower mixer. Allows to save annually up to 150GBP in water consumption Set contains 3 different flow rate inserts to suit your requirements: 4, 6 and 9 L/min flow Suitable for 95% shower taps Thread size: 1/2 inch