Good magnets hold whatever tools I put on them. No problem. The assembly was more than fun. The screws they send to use are too short. I read this in a review but thought the manufacturer had already fixed it. nope You will need about 1 1/2 inch long drywall screws to install them. Be careful when installing them. If you overtighten the screws, the plastic will crack and it will go bad. Do it by hand or in a circle. Reduce your wifi driver down to about three. Then everything will be fine. I offset mine instead of putting them together. It would take more trouble than it was worth and keep me reaching for what I need. Your mileage may vary.