Hey DIYers and plumbing folks! These TAISHER bulkhead connectors are exactly what you need for setting up water systems, rain barrels, aquariums, or any tank project. You get two black PVC connectors that are 1-1/4 inches in size with threaded connections. The PVC material is seriously durable - it won't fade, crack, or fall apart over time. The threaded design with embedded gaskets creates this tight seal that won't leak or slip, which is exactly what you want when dealing with water. Installation is pretty straightforward - they're designed to go through walls, tanks, or panels, and the bulkhead design makes it easy to run accessories through the holes. Perfect for water tanks, fish tanks, rain barrels, water storage buckets, and connecting various pipes, faucets, or hoses. Just a quick note - these aren't for potable water use, so don't use them for drinking water systems. When you're picking pipe fittings, remember to think about your specific application since that affects what material and size you need. Whether you're building a rainwater collection system, setting up an aquarium, or working on any tank project, these bulkhead connectors will make your life so much easier. They're that reliable hardware piece that just works exactly how you need it to.