Product Specifications: Material: Stainless Steel; Size: Large; Approx.8.5*3cm/3.4*1.2inch Inner diameter: 16mm, suitable for connecting hoses with outer diameter 17mm. Weight: about 11-16g Package List: 1 * Aquarium Filter Case High Quality Stainless Steel Strainer Mesh is made of high quality stainless steel.Sturdy and durable.