ALOANES Magnetic Parts Tray Set-Collapsible Magnetic Tool Tray Small Parts Organiser with Double Magnet,Magnetic Bowl for Fixing Nuts and Bolts (Red&Blue)

These trays have a strong grip on metal surfaces, ensuring your tools and small items stay where they are placed. They came in handy. As someone who works on a lot of computers, screws keep disappearing at my job. No complaints! I like them.

I like it because it's a good quantity, a nice color, and the magnet holds my gadget well

These are great little compact devices that do a great job of keeping my project's screws in one place. I like that they fold up when not in use to save space. Definitely a must-have for your toolset.

As another reviewer mentioned, the magnets aren't all that strong. They do hold nuts and bolts up to about M12 in size in a vertical position. But if you bumped the bin slightly, they'd fall out. I know that a lot of mechanics like to store their magnetic bins with bolts in them on the side of their box or the equipment they're working on. That said, if you're using these for working on phones or laptops and are just trying to keep stuff from rolling away, they're fine. The silicone itself seems to be of decent quality and they are a nice size.

Very convenient it fits inside my tool bag

This magnet was terrible. I opened the package and knew instantly how cheaply it was made. It didn't hold bolts at all with the magnet on it. Don't buy this

Super useful when working on a car to keep all the nuts and bolts in one spot

Bowls are collapsible and easy to store but magnetic bottoms are weak refrigerator magnets that will barely hold weight of bowl let alone contents.