Simpson OCB88 8 x 8 Ornamental Column Base Black Powder coatedModel No. OCB88 Gauge. 3 W1 (in.) 7 1 2 W2 (in.) 7 1 2 Coating Material. Powder Coating, Black The Simpson Strong Tie cast in place OCB column base helps prevent wood members from rotating. The bottom of its base plate is designed to be flush with the concrete. OCB66 ornamental column base features a flat black powder coated finish which produces a much more durable and better looking finish than standard paint. Installation: Fasteners required: (2) 3