Review on Multipurpose 10-Inch Stainless Steel Magnetic Knife Bar - Ideal for Kitchen Utensils, Tools, Art Supplies, and Home Organization by Lyon Forrest

The magnet is really very strong. I ordered two small poles because I don't have enough space to mount them. I ended up installing one on my tile rear fender using Gorilla double sided tape. (Check out the instructions for the Gorilla Tape before you apply the tape. It saves you the hassle of peeling the tape off. Ha!) The other one I wanted to hang on the cabinet wall, but ended up sticking it to the side of my microwave (only with magnet) and holds up great. I haven't used any of the mounting systems so I can't comment on that, although it looks like it would be very easy to install this way. They work great as installed and I'm so glad I bought them.