The SHADES Colored Magnet Set with Steel Cable is all you need to quickly and conveniently hang drawings, cards, photos, papers, maps using your Stas picture hanging system. Kids love the bright colors and ease of use! These neodymium magnets offer a very strong hold onto any metal surface. This kit includes a SHADES Steel Cable with Cobra that can hook into any rail with a channel (Cliprail, Cliprail Pro, Cliprail Max, Minirail, Prorail Crown, Prorail Flat, Multirail, Multirail Max, Multirail Crown, Multirail Flat).