Comes with dowty washer and male foster fill. Dowty washers help provide a seal fit without too much torque. Having male foster fill helps provide quick disconnect solutions, you must have the female foster fill on the end of the hand pump hose or filling end of your scuba or scba tank rigs. Made from high grade steel. Corrosion free and tested to higher fill pressures. (300 BAR) Fits the following models of Kalibr: Kalibr Cricket Carbine Kalibr Cricket Bullpup
