Deckorators Black Rail Connectors successfully attach wood or composite boards to deck posts. The connectors are made of durable plastic that is pre-drilled for accurate attachments to the deck posts. With a purchase of this rail connector, 1 1/2" square drive stainless steel screws are included for installation. The Black Rail Connectors is a versatile product that functions accurately for standard railing and multi-angle railing. For standard deck railing, connect 2"x 4" railing connectors to posts at a 90-degree angle. For multi-angle deck railing, connect 2" x 4" railing connectors to posts at angles from 22- to 45-degrees.