Hanperal 3/4" Garden Irrigation Device Venturi Fertilizer Injector Switch Water Tube Kit .Package included a piece of water tube, a flow controller and a filt. .Suitable for Fertilizer and chemical injection through drip and sprinkler irrigation systems. .Based on the motive water flows and Vacuum suction, just need to install the black fertilizer applicator in parallel on the garden lawn plastic water pipe. .Economical and low cost options, can available to 3/4" BSP inlet/outlet connection Includes a fertilizer injector. .Made of engineering plastic Excellent chemical resistance to most of the chemicals Highly efficient and compact differential pressure injection device.