Quantity: a preferential suit contains 10 tees, 10 couplings, 10 elbows and 10 end cap plugs, enough for connecting drip irrigation fittings High quality material: made of environment-friendly and durable high impact plastic with anti-ultraviolet feature; the durable material is strong enough to bear overused pressure Compatible for most 1\/2 inch pipes: used for most of 1\/2 inch drip irrigation pipes and it is approximately 520 ID range; please check the size to ensure it is proper before purchase Plastic drip irrigation fittings set: served for connecting, distributing water, making a turn, and controlling the end; start your drip irrigation installation with this basic fittings to create a maintenance-free drip irrigation system Easy to install: no glue, tools or fixtures required, you just need to insert the pipe into the connectors tightly; note, the heated end hose pipe is contribute to install the fittings