Brass / 0.012 inch (0.3 mm) orifice 10/24 atomizing threads. Operating pressure: 20-70kg / cm, flow rate 80-145ml / min. Minimum water use of 1/2 gallon of water per hour per nozzle. Leak proof, self-sealing ring included with each nozzle; no tapes or sealants are required. A filter on your fog system is highly recommended. Connected nozzles are not covered by any . The brass and stainless steel nozzle is the most efficient and conservative water nozzle available today. It uses only half a gallon per hour per nozzle and features a sturdy brass body with a stainless steel orifice. The nozzle requires one simple maintenance; periodically soak in mist nozzle cleaner to remove mineral deposits that can build up with use. Color: Yellow Material: brass Package contents: 10 x nozzles Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.