brand new and positive OOTDTY Features: Reliable sealed and anti-aging. Good helper on your repairment of water heater, fuel for VALVE and etc. Made of fantastic materials, thus it may be used for a long for time. It's a good choice to switch your outdated one. Pressure Diaphragm ONLY,other kit in the photograph is not included. Specification: Material: Plastic Color: Black Diameter: app/2 Quantity: 10 Pcs Note: No retail package : 1cm=10mm=0 Please enable 0-1cm error due to handbook measurement. pls make sure you don't intellect earlier than you bid. Due to the difference between diversified monitors, the picture may not replicate the actual coloration of the item. Thank you! Package Includes: 10 Pcs x Pressure Diaphragm