Got a water heater or gas valve that's acting up? Often it's the pressure diaphragm that wears out. This pack gives you 10 replacement diaphragms, so you've got spares for future repairs! Each diaphragm is about 54mm (2.12 inches) in diameter, made from black plastic that's sealed well and resistant to aging. They're durable and designed to last. Perfect for fixing various water heaters and gas valves where the diaphragm controls pressure or gas flow. Installation is straightforward for those comfortable with basic repairs. Note: This is for the diaphragms ONLY - other accessories shown in photos are not included. Comes as 10 pieces, no retail packaging. Please check your old diaphragm size before ordering to ensure it's 54mm. A must-have for DIYers, maintenance folks, or plumbers who want reliable parts on hand. Keep your hot water flowing without calling an expensive technician!