CMS Magnetics Large Red Magnetic Clips with Rubber Handle, Pack of 4 Pieces Red plastic material each with one neodymium magnet 24 pages on steel surface which has a thin paint or no paint, like some cabinet. A single clip can hold up to 24 pieces of 20 lb papers to a metal plate (or on a refrigerator door or on refrigerator sides). The results may vary when it's applied to other surfaces can hold up to 5 pages on magnetic whiteboard. Size: 3 3/8" x 1 1/4"