uxcell 6pcs 2.6 Inch Dia Cylinder Pre-Filter Sponge Filter Media for Aquarium

Color: Black; Package Content: 6 x Filter Sponge; Material: Coarse Sponge; Net Weight: 30g
Size: 7.5 x 6.5cm/ 3.0 x 2.6(L*D); Inner Hole Dia: 2cm/0.8; Outer Dia: 6.5cm/ 2.6.
Easy to install over the filter intake.
For preventing small fish from being sucked into the filter.
Can be used again after cleaning, enhances biological filtration.