Algae Cutter Bag (B) is made of nylon mesh that stretches over the inner magnet of a Mighty Magnet to remove stubborn algae quickly and easily. This bag fits Mighty Magnet models F-4, F-5, F-6, F-7 & FF-3.

Dimensions: 4″x 8″. Actual product and color may differ from picture. 

Always clean, inspect, and test products in an inconspicuous area of the aquarium.