Best arm for dual monitors, available in black and white. Brand new condition. Instructions are not included, but you can find the PDF manual on the official website. When I helped with the manufacturer's photography, there were single-arm and dual-arm products. The single-arm models are already completely sold out, so this time we are selling only the dual-arm models as a clearance sale. I have kept one dual-arm model for myself in the office and use it, and it's very convenient and I find it very useful. - Model Name: SENTRY Dual Monitor Arm - Color: Black - Function: Supports dual monitors - Usage Example: Mounting monitors on a desk - Brand: ULTRARM Thank you for viewing.