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Material: Stainless steel; Size: Small and large options: Small about 6.8 x 2.5 cm / 2.7 x 1 inch; Suitable for waterfall filters; Large about 8.5 x 3 cm / 3.4 x 1.2 inch; Inner diameter 0.6 inch (16 mm) for connecting outer diameter hose; Weight: about 116 g Package List: 1 x Aquarium filter case