Excellent magnets! I bought and repaired the back of a dartboard and attached it to a metal door. The board is now portable and can be removed when in use or not. In fact, a 10 lb board only needs one magnet, but to keep it level I used two. Overkill, but it works fantastic. I did not use the screws provided and instead opted for wood screws for the project, they worked great for the assembly. Highly recommended for magnetized mounting requirements.