Nice product. The base measures 5 7/8 squares and is just under 1/2" thick. The 4x4 socket fits snugly and is 2" deep and 5/16" thick. We'll use it for the legs of a small box to round them to keep it on the ground.If I were to use it for the handrail post I would use a gasket around the junction from the post to the sleeve to keep water out.Shipping was a little slow so order accordingly
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