The Foba CEGEE 30 Safety Ring for Combitube is part of the Combitube System. This 15mm thick ring slips onto Combitube sections that are 1.18" (30mm) in diameter. Once screw-locked into position, it keeps other Combitube components from shifting out of their positions.
In the Box
Foba CEGEE 30 Safety Ring for Combitube with 1.18" (30mm) Hole