Strong and Durable: Stainless steel door stop with galvanizing process and durable rubber, metal door stop with very fine surface treatment, waterproof and rustproof, strong and durable. It is a heavy duty product and robust enough for any heavy door. Adhesion and Non-Slip: Door stoppers for the bottom of the door will not slip as there is rubber on both the top and bottom of this small wedge. The rubber provides a firm grip on floors and doors without slipping. The door will not move even in gusts of wind. Adjustable Design: Door wedge stop, spring-loaded door stop can adjust the height to fit all door openings from inches to 3 inches. Most door stops are too short and the door easily slides over it, but this adjustable door stop is high enough and works perfectly. Excellent Door Stop: Large door stop suitable for all heavy commercial swing doors, metal doors, double doors, security doors, self-closing hinged doors and balcony doors with more space underneath. It is also suitable for glass doors, carpets, parquet or tiles and it works great. Safe and Sturdy: Door stops automatically adjust to the space, excellent for commercial, residential, garage, business, public places, schools, keeping all heavy doors open and preventing the door from blowing shut in the wind. Color: black+silver Material: Stainless steel Size: 13CM Package Contents: 1 x door stop Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.