Spiral hose for air control valve to welding helmet

Spiral hose for connecting an air control valve to a respiratory protection supply system.
Thanks to the bayonet connection, the hose can be connected to the air control valve very quickly and securely.
A spiral hose is flexible and can vary slightly in length because it is stretchable, allowing greater freedom of movement.
Hose for air regulator with bayonet connection, 22 mm.