This is a snap-fit connector designed to attach a standard 50mm pipe to the frame of a rectangular Intex Graphite pool. I used it to mount a DIY pool cover rolling mechanism — no glue or tools needed, it just clips onto the pool rail.

Printed with normal setup-on P1S and ESEUN PLA+

Link to cad model https://cad.onshape.com/documents/82a734110aaff1c31939fbd8/w/62362fba92b9f96f2ccbc641/e/554a0ceab6c2c9a4063b13d3?renderMode=0&uiState=6a19bbb387906bc4be98809a