Our tank fittings are made of high quality brass with a polished finish. Rain barrel connectors are rust resistant, corrosion resistant, durable and suitable for use in all weather conditions. The water tank is sealed with safe and environmentally friendly materials, which are non-toxic and tasteless, and will not pollute water resources. We provide you with rubber seals to prevent water leakage. Specifications: 39mm long. Female thread: 3/4" (through hole) Male thread: 1". Package: 1 water end threaded fitting, 2 sealing rubbers. Please confirm the size before purchasing. You can easily connect the outlet tap to the tank via the bucket connection. It does not require any tools to install and is easy to uninstall. Our precision sealed hose parts guarantee perfect watering. The universal tank interface can be installed on a variety of buckets, containers or as the perfect watering device. Brass tank seals can be used in tanks, rain barrels, buckets, faucets water tower and plumbing.