Bathroom shelf with attachment to a shower rod (diameter 23 mm). The internal dimensions of the shelf are 110 x 80 mm and the height is 60 mm. The shelf is strong enough to hold even a large package of shower gel or shampoo. As a material, I used PETG filament with a layer height of 0.30 mm. I recommend putting the supports on the cutouts in the shelf into which the caps are inserted.