<b>Arfun 28 Pieces Drip Irrigation Fittings Kit</b><br> <br> <b>Specifications:</b> 17mmx17mm<br><br> <b>Fits:</b> 0.560-.600" ID 1/2" irrigation tubing <br> <br> <b>Noted:</b> For 1/2 inch tubes, there is a big variation in internal diameters of these tubes (.520 - .620"),<br> be sure of the sizes and buy fittings that "fit". If your tubes is a wider 0.520", you need size 16mm.<br> <b>Secure Barbed Design </b> <p>Secure barbed design. Two barbed ends connect irrigation tubing for a secure leak-proof connection. <br> It can tight fit universal 1/2" drip tubing, ensures the tubing will not slip and leak.</p>