Use the Clik-Clik Calculator to determine which product you need to complete your installation: CLIK-CLIK CALCULATOR These neodymium ClikMagnets with one ring, “clik” to any metal that contains iron. They are ideal for attaching to the T-bars of most suspended ceilings, to industrial ceilings, and to the metal inside suspended FlatHats. Mini ClikMagnets are used for displaying lightweight items – balloons, ceiling danglers etc.Magnet Dimensions: ¾” x ¾”x 1” Magnet Strength: Direction of pull Amount of ferrous (iron) material inside the metal Amount of paint, dirt or bumps on the metal surface FlatHats.Mini ClikMagnets are used for displaying lightweight items – balloons, ceiling danglers etc.ClikMagnets are the heart of the Clik-Clik system. These neodymium magnets with rings “clik” to any metal that contains iron. That makes them perfect for attaching to the T-bars of most suspended ceilings, to the girders of industrial ceilings, or to the metal inside suspended FlatHats.The center ring of a ClikMagnet allows it to be placed on the post of a MagMover for installation, and to be captured by the MagMover’s corkscrew when it’s time for takedown. Magnet Strength: The magnetic strength of any ClikMagnet depends on: Direction of pull Amount of ferrous (iron) material inside the metal Amount of paint, dirt or bumps on the metal surface It’s always a good idea to test the surface in advance of hanging a heavy display. 50 Count Safety: Keep all magnets away from credit cards, video tapes, computers and other electronic devices! The Clik-Clik system is not recommended for use with S-hooks, as items may fall during takedown. Do not swallow magnets.