Actual Material: Copper, environmentally friendly Size: Width: 12.7 cm, Length: 3 m / 6 m Made of pure copper. Stiffer, flexible, and durable material. No chemicals added. Compared with steel wool, copper mesh never rusts and does not leave stains on brick or wood. Copper mesh is ideal for distilling applications. We recommend using a pound of copper mesh inside your still column. This copper mesh can be used to block holes of any shape and size. Easily cut, shaped, and installed. High-quality copper mesh is also suitable for art projects. Copper mesh is ideal for stuffing soffits to help prevent birds and insects from entering. Also effective for deterring slugs and snails from damaging plants. Soft and flexible. Easily cut with scissors. Tips: 1. Cut the copper mesh to the desired length with scissors. 2. Stuff, push, or pack it tightly into any small crack, hole, gap, or opening. Ensure it is tightly compacted so it cannot be pulled out or loosened. Note: Due to different measurement methods, the product size may vary slightly. Due to differences in monitor displays, the image may not reflect the actual color of the item.