Armitage Shanks Sandringham 21 Self Closing Pillar Taps 1/2inch 4lpm Flow RegulatorsSandringham 21 self closing taps are designed to withstand the knocks of any school washroom. They have an easy push mechanism making them particularly suitable for uses with less strength. Features: Easy push operation Brass back nuts Pair of indices 4lpm flow regulators Specifications: Material: Chrome Plated Brass Special notes Easy push mechanism. Pair of red blue indices supplied. 4lpm flow regulators supplied for water saving installations.