Martin Yale 21" Stackable Monitor Riser - 22310 deals System includes a 25 mm

System includes a 25 mm silver coated prism

Three selectable accuracies meet job tolerances from rough grading to final finishing for maximum flexibility

Provides stable and reliable support for precision tasks

Auto Oiler: Yes (Automatic EvenFlow Lubricator)

Martin Yale 21" Stackable Monitor Riser - 22310 deals System includes a 25 mmMartin Yale 21" Stackable Monitor Riser Model Number: 22310 Features: Easily supports a 50lb monitor Helps to free up desk space by providing a storage area for the mouse and keyboard when not in use Elevates each monitor 3. 75" high Rear access ports provide cable management Backstop prevents keyboard from sliding out the wrong side Static dissipating steel with durable powder coat finish Specifications: Quantity: 1 Color: Pearl Gray Product