Carburetor rubber coupling d=35-40mm RQ

A small rubber that will solve the problem for many!
There are several types of manifolds like the Top one that use this type of rubber, and of course, over time it ends up deteriorating... and now it is no longer necessary to buy the entire manifold, this replacement rubber is the solution.
Dimensions: diameter 35mm on one side, 40mm on the other. Length 35mm.

For large carburettors such as KOSO 28-34mm.