★ Washer screws are not included, and the price is 890 yen. Please let me know before purchasing. This is a set of small "Hinoki stages"! You can connect them, make them into stairs, and use them to prevent your bird from falling asleep and falling. [Small Stage] Width: Approximately 10cm, Length: Approximately 8.5cm Thickness: Approximately 12mm ★ The washers are too big for the cage, so I've replaced them with 2cm diameter stainless steel washers! If you attach them as stairs for older or younger birds, they can help birds that can't move around much, or those with poor eyesight, to avoid falling! ─ヽ(*゜∀゜*)ノ─ Do you know how scary it is to not be able to see? It's the same for people, but even a small thing can be terrifying enough to break a leg... Please take care of them! (。- θ -ヾ(>᎑<`) ★ Since it's natural wood, oil may sometimes seep out.