Fence Post Anchor Ground Spike, 4 Pack 36 X 4 X 4 Inches Outer Diameter (Inner Diameter 3.5 X3.5 Inches), Metal Black Powder Coated Post Stake Ground, For Mailbox Deck Garden Railing

Thickened Hard Steel: Made from thickened solid hard steel, the increased thickness significantly enhances its hardness, making the post anchor strong, durable, and resistant to deformation.

Corrosion and Rust Protection: The fence post spikes are coated with a powder layer that provides strong protection against corrosion and rust. It withstands the erosion from soil and rain, while also protecting the wood from rot, greatly extending its lifespan.

Fits 3.5” Wood: The square spike has a total height of 36 inches, a nail length of 30 inches, and an inner width of 3.7 inches. It is suitable for 3.5” x 3.5” square timber, providing excellent support.