The Humanscale M/Flex M2.1 Mounting Arm (X2M33CBWETBETB12NA) is a high-performance, dual-monitor arm system designed for ergonomic, agile workspaces. It features polished aluminum with white trim, 8-inch straight links, and supports two monitors with weight-compensating technology. Key features include 12-inch post, clamp mount, Smart Stop rotation, and quick-release joints.