Use them to flexibly display data on magnetic steel whiteboards or any steel surface. 11 C-channel card holder bold colors with 18 card insert pastel colors let you display up to 198 color combinations.
Top Quality, solid-color, extruded plastic card-channels with precision machine-laminated full-width permanent magnet back. Clings tight to steel and won't slide accidentally or crack apart like other cardholders often do.
The 18 card insert and 11 cardholder colors let you create up to 198 color combination codes so you can post items with very little writing, visually identify and locate similar items instantly on the Whiteboard System™. Example: yellow card = job type and red cardholder = rush this week. Just use your imagination!