When I'm removing a door casing, a lot of the nails come out with the trim. But a lot more also fall to the floor because I have to take them out individually. Now if I want to do a really quick cleanup, this is a handy tool. It's actually a round magnet, and all I have to do is pass it over these and very quickly, it lifts these up off the floor because nails left on the floor like that if I step on 'em, can damage the floor or maybe even my foot.