Although the item has been opened once, it is unused. Please refrain from purchasing if you are concerned. The following is a reprint from the purchase site: 【Stylish Design】This door stopper can be fixed simply by inserting it. It can be used for gaps of 12-30mm. The simple and stylish design in silver and black will match any room, such as the living room or entrance. 【Rounded Edges】The edges of the rubber and aluminum parts are rounded for safety. It will not damage doors or floors, and will prevent serious injuries if you bump into it with your foot. 【Double-Sided Rubber】The surface that stops the door has textured rubber, and the back surface that contacts the floor uses mesh-shaped rubber. The double-sided rubber design prevents slipping and provides a secure hold. It also has excellent abrasion resistance and impact resistance, providing a long-lasting anti-slip effect. 【Aluminum Construction】The main body is made of aluminum alloy. It is rust-resistant and maintains a beautiful silver color. It is also highly durable and can be used for a long time. 【Product Features】① Simply insert: Securely stops the door / ② Safe rounded edges: Does not damage doors or floors and is safe for people / ③ Rust-resistant aluminum: Maintains a beautiful silver color / ④ Rubber on the back: Mesh-shaped rubber prevents slipping 【Product Details】Weight: Approximately 170g / Material: Aluminum alloy, rubber / Size: 12 x 3.9 x 3.3 cm / Color: Silver Thank you for viewing.