Practical Home: Our gutter guards prevent leaves, debris, roof materials, twigs, and other dirt from blocking downspout pipes or rain gutters, while also stopping pests from entering. Sturdy Material: These gutter strainers are constructed from waterproof aluminum alloy, ensuring durability, waterproofness, and weather resistance for long-term use. Protection from Pests: Not only do our leaf guards serve as a leaf filter, but they also act as an effective downspout protector against pests, preventing them from entering your gutter spout. Easy to Use: No tools are required; simply place it into the downspout hole and push it into position. Note: Please wear gloves when handling these strainer meshes to avoid scratches from sharp edges. Specification: Material: Stainless Steel Size Chart: for 40mm to 50mm Package Includes: 1x Downspout Filter Note: Please allow for slight errors due to manual measurement and different monitors.