I'm using these magnets to attach a wall mailbox to a steel door. They are perfect. Very strong but the rubber prevents scratches to the paint. The rubber barrier does diminish the pull force of the magnets (they're still very strong, but much less than uncoated magnets I have of a similar size), but that's not a problem for me. I imagine most people who want rubber coated magnets are prioritizing the scratch prevention to pull force. These are still very strong, and are large magnets sized such that the reduction in force is compensated by their larger size. The hardware makes them attach very securely.
50Pcs Neodymium Magnets With Countersunk Hole And Stainless Screws - Strong Rare Earth Magnets Disc For Locker, Tool Storage, Crafts By MIKEDE
42 Review
16-Pack Powerful Neodymium Bar Magnets | MIKEDE Rare Earth 🧲 Metal Magnets with Double-Sided Adhesive | 60 x 10 x 3 mm
35 Review
Pack Of 12 MIKEDE Neodymium Bar Magnets - Strong Rare Earth Metal Magnets With Double-Sided Adhesive - 60 X 10 X 3 Mm Size
41 Review
MIKEDE 8-Pack Powerful Neodymium Magnets With Double-Sided Adhesive - Ideal For Fridge, Crafts, DIY, Science, Building & Office Projects - Rare Earth Magnets For Strong Grip
39 Review