【Made of Stainless Steel】 The 4x4 post base and screws are made of stainless steel, with powder coating on the surface, matte black. Anti-rust, sturdy and durable. 【Easy Installation】Our 4x4 post bracket (Actual 3.58"x3.58") can match most commonly used 3.5"x3.5" wooden posts. If the wood post is larger than the post anchor size, try sanding the bottom to match the post base. The screws provided allow it to be easily installed on the wooden base. Come with 32pcs Lag screws for wood floor, 64pcs self tapping screws for 4x4 post securing. 【Protecting Wooden Posts】 The 4x4 post anchor can make the contact between the wooden posts and the bottom surface more stable and firm, while preventing damage to the bottom of wooden posts. Can be used in long-term humid environments. 【Wide Application】This product can be used to support porch railings, pergolas, gazebos, fences, deck brackets, column brackets and mailbox post brackets. 【After Sales】 Contact us anytime while you have any installation questions or other problems. We have long-term after-sales service for our 4x4 brackets for wood posts. fence post anchor mailbox post anchor post base 4x4 brackets for wood posts post anchor deck post base post base 4x4 wood 4x4 post base 4x4 post bracket 4x4 post anchor deck railing 4x4 post sleeve deck railing bracket deer stand brackets 4x4 pergola brackets deck post base post base