They are typical tiles which can be found in bathrooms or toilets. These washroom tiles are worn-out. There are mini pits and pores on some tiles. The edges and surface are covered with dirt and dust.

This metal pattern exists in many places, e.g. floors of elevators. It is the most typical 5-strip pattern for increasing fiction.

It is not just a metal plate, but also a rusty texture. Dirt is also on the surface.