A rotatable connector for use with a truss in accordance with the present disclosure includes a sleeve and a connector end coupled to the sleeve. The sleeve engages with the truss in a fixed orientation. The connector end rotates relative to the truss to allow attachment with another connector of an adjacent truss in a variety of orientations.

A coupler system for connecting elongate, horizontally disposed rods to vertical supports includes a top-cap component for attaching to the top of a vertical support. The top-cap support includes a body with plural cavities, and at least one ball-cap component for attaching to an end of a rod. The ball-cap component includes a ball region that fits within one of the plural cavities. The body may be formed with four plural cavities, each having beveled edges. The ball-cap component may include a ball region, a neck region, and an angled region located adjacent the neck region and away from the ball region. The top-cap and ball-cap components may include insertion regions with opposing sets of ribs. The coupler system may further include a cover component, and the body may be formed with a central hole for receiving a fastener that secures the cover component to the top-cap component.