Wide application: the magnetic holders are in simple color, suitable for offices, workshops and daily use, the protective film is transparent and clean to keep the text on the labels bright and clean for a long time Easy to use: write on the included paper strip, slide the paper insert and the transparent protective film, stick the magnetic label holder on a clean and flat surface, saving time and making repositioning easier than traditional adhesive labels Multiple sizes: very convenient for working or studying, can be applied to many occasions, which greatly facilitates your work or life Material: magnetic labels are made of flexible C-channel magnets with a rubber magnetic backing, label paper and plastic film can be inserted easily into the magnetic card holder and can be applied to any metal and easily change labels color: black + white Material: plastic size: 50 x 25 mm Package Contents: 150 x Magnetic Label Holders 150 x Protective Films 300 x Replacement Paper Strips Only the