Abstract: An apparatus comprising at least one trapezoidal post and at least one attachment device is provided. The trapezoidal post has a wide edge, an opposing narrow edge, and two opposing inclined edges connecting the wide edge and narrow edge. The attachment device includes a recessed portion corresponding to the shape of the wide edge of the trapezoidal post and forms at least two opposing arm sections with inclined edges corresponding to the inclined edges of the trapezoidal post. The attachment device is configured to secure to a position on the trapezoidal post by sliding the attachment device along the wide edge of the trapezoidal post to the position and engaging the opposing arm sections with the inclined edges of the trapezoidal post when a force is exerted against the attachment device and the trapezoidal post. The attachment device is further configured to couple to one or more railing components.