Fold up door chock. FatIvan's strong, durable construction, manufactured from engineered plastic and zinc plated steel is guaranteed to do the job. Safe, secure design that will work on any hinge. Folds up for pocket or purse. No need to bend-over, ever. No damage to door or jamb. Hook completely contained within the tool. Firefighters are tired of carrying wedges that rarely work or having bulky pieces of welded angle iron hanging out of their pockets. Firefighters are done having doors close behind them or getting their hose lines pinched under doors. They want a door chock that will work on any door hinge and also fold up and 'disappear' in their pocket when not in use. FatIvan is a great tool to have for home use. Whether it's coming home from the store and needing the door held open for multiple trips in with groceries, or it's needing to get a ladder inside to change a light bulb, FatIvan will be there, magnetized to your door, ready for act