They are polished and have no sharp edges. However, since it is polished and stored centrally, it is easy to get scratches, so don't buy if you mind. Tree Label: Aluminum plant labels can be used in nurseries, greenhouses, orchards, and vineyards to label plants, trees, flowers, vegetables, and crops, making them perfect for growers, farmers, horticulturists, and horticulturists to leave permanent marks on plants. Metal tags - Metal tags can also be used for various applications, including identifying electronic cables, Christmas, Easter gift tags, industrial settings, pets, equipment, animal traps, and more. Metal Plant Tags: Made of soft aluminum, easy to write on both sides. Metal plant tags for outdoor use can keep track of plants grown in a specific area, track the growth of a specific plant, or provide information about the type of plant, its care requirements, or the date it was planted. Outdoor Garden Waterproof Plant Tags - Our aluminum plant tags are suitable for outdoor gardens, indoors and greenhouses, perfect tree tags. Durable and waterproof, can withstand harsh outdoor conditions, including exposure to rain, sun, snow and extreme temperatures. If you have any questions about the item, please feel free to contact us at any time. Your satisfaction is our greatest pursuit.