This commercial grade Power Loc connector is used to connect the .700 OD drip tubing to a main lateral tee with 1/2” female pipe thread. To use this Power Loc fitting, push the drip tubing over the barb with the "O" ring and thread the sleeve over the drip tubing to secure. The tight seal for the Power Loc fittings is ensured by the rubber "O" ring on the barb, which provides a quality water-tight connection.