Bristan FBAS3.5 ECO FBAS 3.5 Flow LIM F22x1 Aerator, Chrome

Amazon

3.5 litres per minute flow limiter Flow limiting spray type flow straightener Female thread that fit in to tap spout 1 year Manufacturer's Warranty, Manufacturer: Bristan

ManoMano

3.5 litres per minute flow limited outlet Aerates water for softer non splashing flow All flow limiters accurate by +/-10%