Features: 1-inch PVC pipe male plug is made from durable PVC material, corrosion-resistant, high-strength, lighter than metal fitting, and has a smooth inner to reduce friction and material buildup. The PVC male plug is used to close the end of a pipe or fitting, with male NPT threads for connecting to female NPT threaded pipes. Designed for use in irrigation, undergrounds sprinkler systems, outdoor applications, cold water supply lines, rain barrels systems, and sprinkler systems, but not suitable for drinking water. Intended for use in cold water systems only. The water heater drain plug kit includes: 12pieces of 1inch (approximately 2.5cm) water heater drain plugs for convenient replacement and also suitable as spares. The water heater drain plug can help your water heater discharge sewage, also can avoid dirt from growing in the long run. Specifications: Material:Plastic Size:1inch Size:Approx.21mm/0.82''x25mm/0.98'' Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 12Pcs Water Heater Drain Plug