M40 and M50, and then the hose is 2 "what does the box connection mean?"
This should be called joints, hose connectors or joints or the traditional water tower.
M40 and M50 are the specifications of the teeth, but you do not specify the spacing of the teeth.
One with teeth and one with hose, the hose is 2 inches, 2 inches of hose, and the inner hole is 50MM (1 inches =25.4MM).
