Can I buy more of the small round pieces that hold the shelves together?

You can purchase these by calling our customer service at 877.242.2636.

is this stainless steel? Can this be placed outdoors?

This item is made for inside use. Ongoing exposure to moisture will result in this item's exterior finish deteriorating; we wouldn't recommend this item for a bathroom either due to humidity exposure. This item is perfect for toy storage in a kids room, or closet or basement storage.