Made of plastic material, wear-resistant,, durable for long term use.easy to install in your aquarium fish tank.Sucker holder groove fit for 5mm Thickness Fish tank divider.Use these divider holders for separations of different fish, for breeding and to prevent your fish to fight as well. Handy clips to divide a bigger fish tank into several compartments for breeding or separation. Professional Divider Sucker Holder can divide fish tank into severals for fish breeding or separation. For separating different fish, breeding and prevent fish to fight as well. Product description: This product can be stuck on the glass to divide the fish tank into several parts, insert the glass of the same size inside the fish tank into the clip, and then use the suction cup to stick the clip to the inner wall of the fish tank to stabilize the glass and separate the fish tank into two different parts. part. Fish with different habits can be kept separately in the same tank. Can clamp 5mm glass thickness