Shelf label holders are mainly used to display advertising information text signs and product details or price, identify stored products or mark office items. It can be clamped on glass panels and wooden shelves up to 23mm(0.9inch) thick. Widely used in kitchens, shopping malls, supermarkets, warehouses, retail stores, storage baskets, etc.SpecificationColor: ClearMaterial: PlasticOverall Size: 75 x 25 x 21mm/ 2.95 x 0.98 x 0.8 inch (L*W*H)Thickness: 0.8mm/ 0.03 inchInner Width: 23mm/ 0.9 inchFit Shelf Maximum Thickness: 23mm/ 0.9 inchPacking List: 50Pcs Plastic Label holders with 50Pcs White Blank LabelsAdvantageThe shelf label holder is made of durable PVC plastic, sturdy, not easy to break, and long-lasting, with smooth edges that won't hurt the cards. Clear plastic shows a good visual effect and is not easy to yellow.