Shower Curtain Rod Socket Flange
A wall socket for a 25.4 mm (1 in) shower or closet curtain rod, with a 25 mm deep bore whose flared trumpet mouth lets the rod enter up to about 14 degrees off-square — the fix for sloped ceilings, bowed tile walls and out-of-plumb corners where a straight metal rod cup will not seat. 70 mm round flange, 34 mm tall, four M4 anchor holes on a 55 mm cross, an M4 self-tapping set screw through a 7.8 mm thick collar to lock the rod, and a 5 mm drain port opposite it so water runs out instead of pooling in the cup.
bathroom curtain-rod bracket wall-mount