The 24-Inch AdirOffice file hanging clamps are designed to hold large documents such as blueprints, layouts, maps, and drawings. Each clamp can accommodate up to 100 sheets or 20 pounds of weight. The clamps are universal, so they work with both AdirOffice storage and display racks, and other brand racks. The clamps are built from strong and sturdy aluminum, with solid steel silver wing knobs. They also include transparent label holders that make file retrieval and identification easier. Pack of 6 clamps. 1-year manufacturer warranty included. | Adiroffice | | 24" Aluminum Blueprint File Clamp Hanging Clamps, 6/Pack | Gray | Best Buy