Check the listing for details. Irritec Perma-Loc Tubing Reducing Tee. Condition: New. Listed at 14.56 USD. About Perma-Loc Drip Irrigation Fittings:Perma-Loc fittings and adapters are heavy duty reusable connectors for all your connection needs. Perma-Loc fittings require no special tools to connect to tubing or tape. Perma-Loc fittings can be used on blank tubing or drip line.To Use: Simply twist the locking collar back towards the center of the fitting, exposing the barb. Then push tubing or tape over the barbed end. Next, hand-tighten the locking collar over the tubing or tape for a permanent, secure fit.To Remove: Just loosen locking collar, pull tube off, and re-use as needed.Perma-Loc fittings look similar to traditional flange and locking nut plumbing connections; however, in most cases, they work differently. Unlike a typical locking nut which comes off the fitting and slides over the tubing, a Perma-Loc locking nut is not removed from the fitting. This Perma-Loc Tubing Reducing Tee is used to connect two different sizes of polyethylene tubing creating a three way junction. 3/8" Perma-Loc 500 Series FittingsWe carry 3/8" Perma-Loc 500 Series fittings to convert smaller .520" poly tubing to our 1/2" (or larger) tubing. The most common manufacturers of this type of tubing are:RainDrip .520" ID (Inside Diameter)RainBird .520" ID (Inside Diameter)If you have an existing drip irrigation system with this size of tubing and you wish to expand it using Drip Depot poly tubing, you can use one or more of these adapters to make the different size tubings compatible. Perma-Loc SeriesNominal SizeAcceptable Inside Tubing Diameter Acceptable Wall Thickness 5003/8".510" to .580".035" to .055"6001/2".590" to .630".025" to .050"8003/4".790" to .845".045" to .065"10001"1.025" to 1.085".045" to .070"