The right hanging clamps are key to a filing system’s effectiveness. Designed for blueprints and large format documents. These strong aluminum clamps with Solid Steel silver wing knobs are both visually pleasing and soundly durable. Each clamp can accommodate up to 100 sheets or 20 lbs. Their transparent label holders make it easy to find what you’re looking for. Fits all Adir, Mayline, and Safco racks. Sold individually.