0.012-inch (0.3 mm) brass/stainless steel orifice, easily screws onto any spray nozzle with a 10/24 UNC thread. The best choice for outdoor use with potable water: widely applicable in gardening, outdoor cooling systems, greenhouses, humidification, disinfectant spraying, epidemic prevention, air purification with deodorant, small fountains, etc. Operating pressure: 20 to 70 kg/cm²; flow rate: 80 to 145 ml/min. Minimum water usage: 1/2 gallon of water per hour per nozzle. Leak-proof, self-sealing ring included with each nozzle, easy to install. Color: Brass. Material: Brass. Size: 1 x 0.5 cm. Package Contents: 20 x Sprinkler. Only the above package contents are included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1 to 3 cm.