Atdec SP10SW Desk Post Accessory, 3.94-Inch or 100mm, Silver and White Desk Post Accessory 3.94 or 100mm that can Support up to 4 arms; Part of Atdec's modular Systema range Incorporates 4 channels that can each be used to Support display arms, notebook arms or cable management Desk clamp and bolt through mounting options included 10 Year Warranty 10 Year Warranty