uxcell 6 Piece Aquarium Fish Tank Biochemical Filter Sponge, 38 x 12 x 2cm, White Color: White; Package Content: 6 x Biochemical Filter Sponge Total size: 38 x 12 x 2cm/15" x 4. 7" x 0. 7"(L*w*t) Material: Sponge Weight: 10g Net Weight: 107g