Chief KRA227B
— K1D, K1P, K1S, & K1W Dual Monitor Upgrade Kit, Black
The KRA227 Dual Monitor Upgrade Kit provides a fast & easy means of adding a second arm to any single-arm K1D120, K1P120, K1S120, or K1W120 mount; converting them into a dual-arm K1D220, K1P220, K1S220, or K1W220.