Qzbhct 10 Pack 0.39 inch Filter Foam for Hagen Fluval Edge Filtration Systems, 1.57 * 2.76 inch

Approx Size: Φ40mm x φ10mm x 70mm, please check your filter to purchase the size you need. Package included: 6 Pcs Pre-filter Spong. Please note these foam are pre filter sponges,so only have single hole. Anything larger than a 1/2 inch inner diameter is a no go with these pre-filters. Enhances biological filtration: these pre-filter sponges could help to trap particles and debris, and prolong the life of your filter media,provide efficient water flow with less clogging for long lasting filtration.