Here is a great way to organize small parts and hardware in your home, shop or garage. These magnetic canisters let you keep screws, nuts, bolts and dowels within easy reach by fastening them to any ferrous metal surface. They're transparent so you can see the contents at a glance—no need to open the lid. The caps screw on for a firm connection so they can be attached to the bottom side of a ferrous surface without spills. Keep them handy mounted to your power tools, to the bottom of our metal Shop trays (#48477, sold separately) or to the side of our Paper Towel Holder (#44429, sold separately).