For all air intake nipples with an external thread of 16.41 mm / 3/8". This product ensures a secure separation of the connection and eliminates the risk of unwanted disconnections as well as injuries from hose impact. The safety coupling vents the connection before uncoupling. It has an operating range of 0 – 20 bar and allows for one-handed operation with minimal effort when connecting and disconnecting. The coupling process is quiet and avoids loud popping noises, and it can also be easily operated with gloves. Made of brass with a nickel-plated surface, it features a coupling sleeve for types 1, 2, 3, and 4. The net weight is 0.13 kg, and it operates within a temperature range of -15 °C to 80 °C.