Due to the high pressure of the wind, it is not possible to connect to traditional and simple methods, and the wind instruments must be connected to the wind compressor by strong connections so that the wind pressure does not separate the wind instruments from the compressor. These wind connections must be made by coupling and wind sequence. The "20SP Active Coupling Large-Sized Coupling" has the ability to connect wind instruments such as pistols, nail studs or punches, windshield wipers, wind gauges and more. The head of this coupling model is connected to the inside of the wind hose and is therefore called the head coupling. This connection coupling can withstand a maximum pressure of up to 150 PSI. This coupling is capable of withstanding minus 20. C to 107. C. The chrome coating is resistant to wear and the opening of this coupling is ionized. Be sure to note that the trail that can be connected to this coupling must be a trail with a size of 1.4 inches, which is the most common size of the trail. This connection coupling is based on a variety of IAF, ISO9001: 2000 standards to reassure the user of the purchase of a quality product.