Strong and Durable: Stainless steel door stopper with electroplating process and durable rubber, metal door stopper with very fine surface treatment, waterproof and rustproof, strong and durable. It is a heavy duty product and sturdy enough for all heavy doors. Adhesion and Non-slip: Door bottom door stoppers do not slip because there is rubber on both the top and bottom of this small wedge. The rubber provides a firm grip on the floor and door without slipping. The door will not move even in gusts of wind. Adjustable Design: Door wedge stopper, spring-loaded door stopper can adjust the height to fit any doorway from 1 inch to 3 inches. Most door stoppers are too short and the door slides over it easily, but this adjustable door stopper is high enough and works perfectly. Excellent Door Stop: Large door stopper 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, great for commercial, residential, garage, business, public places, schools, keeps all heavy doors open and prevents the door from blowing back in the wind. Color: black+silver Material: Stainless steel Size: 13CM Package Contents: 1 x Door Stop The above package content only, 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.