The Speedglas self adjusting breathing tube 834016 is designed somewhat like a slinky to give you added flexibility when needed and to recoil to prevent snagging when extension is not necessary. The Adflo hose has a quick release system (QRS) so one handed connection and disconnection is possible. This Speedglas breathing tube is only suitable for use with the Speedglas 9100 Air, 9100 FX Air & 9100 MP Headtops. (Not suitable for 9002 series headtops - if you would like to connect this hose to a 9002 headtop you will need an adaptor - click here to view adaptor). Part number Speedglas 834016.