The Hagen A1368 nylon bags are designed for the following:
The AquaClear 110 - A1368 Replacement Nylon Bag 2-Pack is a two pack of nylon bags helps keep freshwater or saltwater aquariums clean. AquaClear nylon bags feature fine mesh that hold small grained filter media. The AquaClear 110 bag is constructed with durable nylon.
AquaClear 110 - A1368 Replacement Nylon Bag 2-Pack specifications: