with 1,6" (40mm) inner thread (standard connection of most gas masks filter and equipment).
The sleeve fits our corrugated tubes LS, the breathing bag AB, the ventilation bag BB, and on accessories from other manufacturers with 0,86" (22mm) diameter.
The 1,6" (40mm) standard thread fits on our equipment with the appropriate connection, the tube connectior SA1, our tees, connectors and on many gas masks equipment.

Product safety

Information on the manufacturer:

Hans-Peter Michels
Gartenstrasse 13
36381 Schluechtern
Germany
[email protected]
https://www.studiogum.com
Safety instructions and warnings