brand new and high-quality Features: Reliable sealed and anti-aging. Good helper in your repairment of water heater, fuel for valve and etc. Made of fine materials, thus it may be used for an extended for time. It's a good selection to interchange your previous one. Pressure Diaphragm ONLY,other equipment demo within the photo isn't always included. Specification: Material: Plastic Color: Black Diameter: app/2 Quantity: 10 Pcs Note: No retail equipment Transition: 1cm=10mm=0 Please enable 0-1cm error due to guide measurement. pls make sure you do not intellect before you bid. Due to the difference between different monitors, the picture won't reflect the actual coloration of the item. Thank you! Package includes: 10 Pcs x Pressure Diaphragm