How do mechanics generally keep screws and other metal pieces from rolling away?

Magnets can come in especially handy when dealing with small metal objects such as screws and nails. Not only do mechanics use magnetic trays to keep them in place, but they also use magnets to retrieve fallen pieces and extract small objects from otherwise inaccessible areas.

Asked by Don Ayres · Last updated 5 years ago · 43.6K views · SOURCE