Easy to use doorstops just step on and release instantly, no manual lifting required. They're door stops at the bottom of the door, and you don't have to bend over to operate it with your hands every time. The gantry will attach to the door and can be engaged and disengaged with one foot. INNOVATIVE DESIGN This door stop is specially designed for all doors and is made of non-slip rubber and high quality materials. When starting the installation, just make sure the door stop is in the correct position to touch the floor. With the foot-operated design, the door at any angle can be stopped at any time. The sturdy-grip metal door stopper sticks to all surfaces - hardwood, concrete, tile, carpet. Suitable for use in a variety of locations including commercial doorstops, garage doorstops, and most home doors. Step doorstops are a great time saver. Maximum Durability Mast Stoppers are made of high-quality materials for long-term stability. The door brackets are durable enough to keep heavy doors open. Please use it with confidence. Use a step-down doorstop to avoid collisions, extend the life of your doorknob, protect your walls from damage, and keep them clean and smooth.