The Netafim 17 mm Techline Combination Tee connects to 1/2 in Female Pipe Thread and has dual 17 mm barbed tubing connectors designed to fit the 17 mm UV Poly Tubing. These tee fittings are easy to install without clamps, glue or tools and form a tight, leak-proof connection. Use in combination with the Netafim Liquid Filled Pressure Gauge 0 - 100 PSI to measure water pressure on the table.