Product dimensions: 100mm x 240mm. Shower head: Get a pressure boosting shower head. Micro nozzle: The micro nozzle technology provides small, dense holes which increase the speed of the water flow to improve the pressure. Three modes: Features three modes of various pressures to suit your needs. Easy installation: Simply screw onto your current shower hose! Upgrade: Upgrade and get two shower heads! | Pressure Boosting Shower Head | Wowcher