The Paffoni ø40 mm ZA91100R Mixer Cartridges Two are replacement cartridges designed for use in kitchen, bathroom, and bidet faucets. With a diameter of 40mm, these cartridges are specifically compatible with Paffoni products, featuring a distributor with a regulation function for easy installation and maintenance. Perfect for replacing worn or damaged parts in bathroom fixtures, these cartridges are a reliable and high-quality solution for ensuring smooth and efficient water flow.