Super Door Stop is easy to use and versatile. Just place it where you need it, either over the hinge, on the door frame or on the floor. Use the Super Door Stop to help prevent costly worker's compensation claims and lost productivity due to back related injuries. It's great for a variety of service personnel including janitors, delivery persons, housekeeping, contract cleaners, movers, utility or repair personnel, anyone who requires passage through doors. Made of heavy duty rubber, Super Door Stop's built-in shock absorber won't damage doors, frames, hinges or flooring. The Super Door Stop's unique design attaches to door knobs, broom handles, vacuums, janitorial/maintenance carts, trash cans, carryalls, and more. Plus, the built-in magnet is convenient for easy storage on metal surface.