aquarium fish tank - tubular bell large out, in skimmer - 13mm hose
set of large glass intake and outakes. suit 4 foot tank. skimmer out, tubular bell large in. really nice in tank. fits a 13mm crystal hose, you heat the hose end in some boiling water, shimmy it over, and it sticks tight like super glue no leaks or need for clamps. great condition.