Features 1.Made of high quality stainless steel material, sturdy and durable in use 2.Easy to install and convenient to use 3.The mesh of the filter cover is small, which can avoid sucking small shrimps and fishes 4.Can prevent large debris from being sucked into and blocking the filter system 5.Suitable for using in fish tank and aquarium, protecting shrimp and small fish safe Specification Features: Made of high quality stainless steel material, sturdy and durable in use. Easy to install and convenient to use. The mesh of the filter cover is small, which can avoid sucking small shrimps and fishes. Can prevent large debris from being sucked into and blocking the filter system. Suitable for using in fish tank and aquarium, protecting shrimp and small fish safe. Specification: Condition: 100% Brand New Material: Stainless Steel Size: Small, Large (optional) Small: Approx. 6.8*2.5 cm / 2.7*1 in; inner diameter: 12mm, suitable for waterfall filter Large: Approx. 8.5*3 cm / 3.4*1.2 in; inner diameter: 16mm, suitable for connecting 16mm outer diameter hose Weight: Approx. 11-16g Package list: 1 * Aquarium Filter Case Note: 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Package List