Bullet Points:1.Wind-Proof Feature: Don't fear 10-standard stable winds; our mechanical door stopper secures your doorways with unequalled steadiness and reliability. You can trust it to keep you safe2.Flexible Height Setting: Adjust the ground suction peak in line with the height of the door crevice, with an adjustable height differ of 10-20mm, ensuring a good fit3.Technological innovation: Our mechanical door stopper uses a push-to-lock mechanism that stops slamming and protects kinfolk members, specifically children and pets4.Not smooth to break: Our mechanical door stopper is constructed with a solid aluminum alloy constitution and wear-resistant material, making it solid and outstanding5.Easy Application: Enjoy safe and versatile use with this mechanical door stopper's two installation options. Choose between punching or no punching and install with strong double-sided tape or screws for an easyWith a moment push, it unlocks easily and has an anti-break design. Product size: 6.2x4x1cm/2.44x1.57x0.39 inchesProduct material: aluminum alloyApplicable door crevice height: 10-20mm/0.39-0.78inInstallation method: punching or punch-proofWindproof ability: strongProduct list:Mechanical suction * 1 pieceScrews * 4 piecesSticker * 1 piece