This sign clamp can be use to attach signage to a variety of objects. The mount is ideal on the sales floor because of it versatility of application. This sign clamp is great for placing signage where it will be visible. The mount attaches to round, square and rectangular tubing. The clamp will be great for organizing the sales floor. Heres how the system works: 1) Choose size and style of frame that best suits your sign. 2) Decide which type of clamp will work best for your fixture: magnetic, spring, or C-clamp. 3) Complete the holder with the appropriate stem fitting and length.