Flexible, metal swing arm with multiple articulations clamps onto the edge of a desk or bench, allowing pockets to be accessible yet off the worksurface. Arm swivels at base left to right, moves up and down and moves in and out. Ergonomic design reduces the space it occupies and fits into its environment. Strong mechanism includes integrated springs for easy use. Swing arm includes a 10-pocket starter set, snap-on index tabs and pair of side stops to support the pockets and can be expanded to 20 pockets. Each PVC pocket offers two views. Letter-size pockets are designed for optimum visibility and strong protection for your documents against dirt, spills and dust, even with intensive use.