Quickly shift and re-align titles and categories on-the-fly with these convenient holders. Magnetic back attaches to all steel surfaces and is ready to hold various sizes of insertable Data Cards (sold separately). Soft, sturdy material won't scratch surfaces when mounted or removed. Pre-cut lengths can easily be cut to size with scissors for a perfect fit every time. Color(s): Charcoal; Height: 1 3/4 in; Width: 3".