PVC combination tees are used for slip to pipe thread fitting connections. We offer a huge selection of sizes, from 1/2" inch up to 2" inches. Our combination tees are all slip x slip x FPT, and you can choose from standard combination tees with all three sockets the same size, or from combination reducing tees, which have two larger sockets and one smaller socket. Our durable combination tee fittings are great for sprinkler system installations. PVC primer and glue (sold separately) are required for proper installation of these combination tee fittings.