Pipe ?18.5 (whatever length your paper towel is....)
Assembly and mounting:
Put the pipe in the holes of the bodys Use a piece of wood or 3d printed cubes to have the desired distance to the wall (One side of the body has a vertical section which is there to help for the alignement and the positoning). If the position is good. Put double sided tape on the body and stick it to the designated place
If you make this part please show me your result or leave a comment….. Have fun!