These are stainless steel wire fish tank plant fixed plant net mesh pads, which is , safe, tear-resistant and uneasy to rust underwater. No worries to the fish, shrimp or water grass in your fish tank. Great for DIY your own fish tank. Features -Color: Silver -Material: Stainless steel -Size: 8.00X8.00X0.10cm/3.14X3.14X0.04in - Stainless steel wire mesh pad, and anti-rust underwater. - This wire mesh pad is used for fixing moss or other aquatic plants. - It won't damage the tank for the fish or grass. - The distance between the holes is suitable, which is good to tie the small piece of water plant or wood around these square. - Ties the water grass around the square mesh and connects them at will to build a wonderful art. - With this and anti-rust plant fixed net, you can well decorate your fish tank or aquarium easily. Package list: 15 tank plant fixed nets