Dual flush valve with push button: This toilet cistern valve features a dual flush design, allowing a full flush or a half flush. Suitable for cistern outlets sized 12.7 cm and 5.1 cm. Adjustable overflow tube: The overflow tube is adjustable from 5 cm to 33 cm in length, ensuring compatibility with different cistern sizes and enabling precise water level control. Chrome oval dual flush button: The flush button is chrome plated and oval, 5 cm wide. It is designed to install through a 1.5 cm threaded hole in the cistern, giving your toilet a stylish touch. Durable and reliable: Made from ABS, this flush valve is robust and resistant, delivering long lasting performance and reliable flushing for a trouble-free experience. Use scenarios: - Upgrading an older toilet to a dual flush system to save water and improve flush control. - New installations where cistern outlets measure 12.7 cm or 5.1 cm. - Replacing a worn flush button and overflow tube with an adjustable, easy-fit unit.