Steelcase Volley Premium Brushed Aluminum Dual Monitor Arm Conversion Kit
These use a standard VESA mounting bracket, so should be compatible with most monitors that use a standard VESA mountThese kits are designed to convert one Steelcase Volley arm to a dual arm setupThey do include mounting hardware, so can be used as single arms as wellThey are all brand new, although one box is open, and some boxes have superficial exterior damageI am willing to do bulk deals if you need a few kits