Drip Depot carries a wide assortment of drip irrigation supplies. You'll find everything you need for your irrigation project. It is important to ensure that you keep your irrigation tubing sizes in mind when ordering supplies. There are various sizes of tubing and each size requires the proper size fittings. For example, Drip Depot carries drip irrigation polyethylene tubing in what is referred to as 1/2" and 3/4" sizes. The 1/2" is .600" ID by .700" OD. The 3/4" is .820" ID X .940" OD. You must get the correct irrigation fitting to match up with the poly pipe. We use the terms 1/2" and 3/4". Just make sure you get 1/2" fittings with 1/2" tubing and 3/4" fittings with 3/4" tubing. 1/4" irrigation tubing is more simple. 1/4" tubing is basically 1 size and compatible. Another thing to keep in mind is thread type. Remember, you have hose thread (HT) and pipe thread (PT). A good irrigation system requires good connections and if you mix thread types your system will leak, guaranteed. Here is a link to more information on irrigation thread types: <a href="http://www.dripdepot.com/article/hose-thread-versus-pipe-thread-drip-irrigation-parts">Hose thread versus pipe thread for irrigation</a>.