This is a bundle sku and components are: * Atdec Heavy Duty Dynamic Arm Black * Atdec Monitor Arm Base Black * Atdec Dual Monitor Rail Accessory Black * Atdec Heavy Duty Desk Fixing Black The AWMS-RHXB dual crossbar display desk mount is designed to support two displays with a single monitor arm. Its spring-assisted design with three points of articulation enables effortless simultaneous adjustment of both monitors from a seated position. The crossbar features a horizontal rail which enables display position adjustment in both directions, to accommodate monitors of different sizes and landscape/portrait configurations. Supports two displays up to 27in weighing 2-7kg. Up to 5kg of counterbalance is also possible for uneven loads (different monitor sizes). Comes with a desk clamp mounting option. All mounting hardware included.