The unique design of our AngleVision label holders combines a heavy-duty label holder with a flexible "C" channel snap that retrofits 1" - 1.12" diameter tubing used by major workstation manufacturers. It is made of clear plastic and is insertable as well as barcode-compatible. You may tilt the holder at any desired angle for maximum visibility and snap it off to relocate. The holder can accommodate 2" x 4" labels that can be inserted from the top.