Practical Home: Our gutter guards avoid leaves, debris, roof, twigs, and other dirt from clogging downspout pipe or rain gutters, and block from climbing up Sturdy Material: These gutter strainers are made of waterproof aluminum alloy, ensuring durability, waterproofness, and weather resistance for long term use Protect from Burrowing: Not only do our leaf guards give leaf filter, they're also a great downspout protector against, avoid them from burrowing in your gutter spout Easy to Use: No tools required, simply place it into the downspout hole and push it into the right place Note: Please wear gloves when working with these strainer mesh to avoid scratches from sharp edges Specification: Material: Stainless Steel Size Chart: for 40mm to 50mm Package Includes: 1x Downspout Filter Note: Please allow slight errors due to manual measurement and different monitors.