... paper holder; 2.20mm,30mm ok; 3.round magnet clip; 4.office magnet colorful magnetic paper holder;1.size:round,oblong,star ... ;3.materials:plastic/transparent plastic + ceramic/ferrite magnet3.logo: printing can be done on the magnet holder or on the blister package ... ,we accept customers'design; colorful magnetic paper holder,memo holder magnet,push pin manget,school office ...