These solid wooden post caps are available in treated pine or untreated cedar, and in two sizes to fit nominal 4x4 or 6x6 posts. They are slightly recessed on the underside to accommodate the post, and can be mounted with construction adhesive or fasteners you supply.
They have bevelled tops to help shed water and are supplied unfinished so you can paint or stain them to match surrounding materials. Inside dimensions are 3 1/2" square for the 4x4 size and 5 1/2" square for the 6x6 size.
Made from North American lumber.