Comes with barb, you can easily connect water pipe Self-piercing barbed end for insertion directly into the 1/4" drip tubing Unique barb design reduces insertion force; practical, portable and easy to install Suitable for 4/7mm (Inner/Outer diameter) tube for your irrigation or hydroponic systems Constructed of highly durable UV and chemical-resistant materials to assure long life This barbed tee fitting quickly connects 3 pieces of 1/4"" drip irrigation tubing. These non-corrosive plastic fittings are guaranteed to provided a secure, watertight and airtight connection. These fittings offer strength and durability. Accepts all sizes of 1/4" drip tubing and provides a durable, leak-tight connection. Unique barb design reduces insertion force and easy to install. The Universal Connectors are perfect for using with irrigation or hydroponic systems.