4 Inch Diameter Plastic Ring,9 Inch Short Long Bag.
Filter socks are made of high qulity NYLON, Excellent for mechanical filtration.
Micron rating: Available in 150 micron (0.15mm),150 micron mesh filter socks will capture floating debris smaller than 200 micron , regularly replace to keep aquarium water crystal clear.
Solid construction and heavy duty stitching make these socks strong and durable so these mesh socks can be cleaned and resued many times.
