Specifications:
1) Quality and strong Net Bag Filter Media Bio-Ring Net not easily broken.
2) Size: 25cm L x 18cm W, Diameter Net Hole: 2mm
3) Suitable for keep the bio-ring, filter media, lava rock, coral stone and others inside the net.
4) Subtank filter medias organizer
5) color black & white.
3PCS/BAG