Made up of solid machined brass parts and a thick anti-crack hose, this filling device can be used to transfer pressure up to 450BARS. It can be easily used with any scuba tank and air rifle. Male type filling probes can be attached with the device with the help of the brass adaptor while a female type filling probe can be attached after removing the adaptor. A knob is provided to de-pressurise the device to safely remove it from the air rifle after filling.