Production in a 3D printer can result in an uneven surface and not completely flat edges. This is unavoidable and typical of 3D printing productions.
Colors may vary.
Many viruses and bacteria can be found on door handles, especially in public areas. In order not to have to touch them, there is the contactless door opener from B + B. The door opener is also suitable for the shopping cart.
Using this door opener does not rule out a possible infection!