Corner Post, Steel, Guard Rail Levels Double, Post Height 42-5/8 In., Mounting Style Bolt On, Safety Yellow, Post Dimensions (W x D) 4 In. x 4 In., Mounting Plate Dimensions 10 In. X 10 In. X 5/8 In., Includes (4) Anchors, (4) Nuts, (4) Flat Washers, (4) Lock Nuts
This dock guards is one of the best product around 221.25 ..It's from trustworthy Grainger Approved, so you don't have to worry about bad quality.