Product Dimensions:2 x 2 x 2 cm; 100 Grams Colour:18mm Quantity:1 batteries required:No Batteries Included:No Item Weight:100 g Welcome to my store, Hope you have a pleasant shopping trip! Features:1.The mesh aperture is less than 0.5mm spacing to effectively prevent young shrimp and fish, fry from being sucked into the filter,2.Filtration function. Capture particles and dirt, improve biological filtration ability, prevent fine particles from being sucked into the filter, keep the filter in good working condition.3.Fine mesh design: fine mesh design can prevent newborn fish and shrimp from being sucked into the filter and prolong the service life of the filter material inside the filter.4.Easy to install, connect to the water inlet, easy to clean, regular use of soft brush to clean the dirt on the filter, can be reused, freshwater, saltwater fish tank applicableSpecifications:Material: stainless steel rubberSize:(LxW)6.5cmx1.7cm/2.6 "x0.66";inner dia:12mm/0.50";(LxW)6.5cmx2.1cm/2.6 "x0.82";inner dia:18mm/0.70";Package List:1 X Aquarium Filter GuardNotes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Please allow 1-2cm slight dimension difference due to different manual measurement. 304 Stainless Steel Polishing Treatment, Smooth and Rounded Surface Does Not Hurt the Fish and Shrimp, Long-term Use Is Not Easy to Rust, Long Service Life Aquarium Filter Inlet Protection Mesh Cover, to Prevent the Filter System Clogging; Avoid Filter Inhalation of Small Shrimp and Fish; Extend the Use of Filter Material in the Filter Time. Prevent Debris and Fish Feces From Entering the Filter Bucket, Reduce the Cleaning Frequency of the Filter Bucket, Reduce the Dirt of the Water Pipe to Keep the Water Pipe Clean Flexible Rubber Ring Interface, Compatible With All Kinds of Glass, Plastic, Stainless Steel Inlet. Fitted With the Caliber Range: 12mm Inner Diameter For Water Inlet Diameter of About 12mm-14mm; 18mm Inner Diameter For Water Inlet Diameter of About 16mm-18mm; Easy to Install, Connect to the Water Inlet, Easy to Clean, Regular Use of Soft Brush to Clean the Dirt on the Filter, Can Be Reused, Freshwater, Saltwater Fish Tank Applicable SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied. See more product details 304 Stainless Steel Polishing Treatment, Smooth and Rounded Surface Does Not Hurt the Fish and Shrimp, Long-term Use Is Not Easy to Rust, Long Service Life Aquarium Filter Inlet Protection Mesh Cover, to Prevent the Filter System Clogging; Avoid Filter Inhalation of Small Shrimp and Fish; Extend the Use of Filter Material in the Filter Time. Prevent Debris and Fish Feces From Entering the Filter Bucket, Reduce the Cleaning Frequency of the Filter Bucket, Reduce the Dirt of the Water Pipe to Keep the Water Pipe Clean Flexible Rubber Ring Interface, Compatible With All Kinds of Glass, Plastic, Stainless Steel Inlet. Fitted With the Caliber Range: 12mm Inner Diameter For Water Inlet Diameter of About 12mm-14mm; 18mm Inner Diameter For Water Inlet Diameter of About 16mm-18mm; Easy to Install, Connect to the Water Inlet, Easy to Clean, Regular Use of Soft Brush to Clean the Dirt on the Filter, Can Be Reused, Freshwater, Saltwater Fish Tank Applicable SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied.