Item Type: Mail Box Material: Stainless Steel Weight: Approx. 1578g / 55.7oz Package List 1 x Mail Box 4 x Plastic Expansion Tube 4 x Screws 4 x Rubber Pads 2 x Keys 1Narrow Slot: The hanging mailbox's narrow slot reduces the danger of mail being removed without a key 22 Keys: The locking mailbox is equipped with 2 keys, which can effectively protect the safety of your letters when installed outdoors 3Small and Compact: The hanging mailbox is small and compact, easy to use and doesn't take up much space 4Stainless Steel Material: The mail box is made of stainless steel material, which is wear resistant and durable, suitable for your long term use 5Easy Installation: The mailboxes for outside is also equipped with plastic expansion tubes, screws, and rubber pads for your convenience