The BCC4DCS is a strong block magnet with the added benefit of a countersunk hole. This enables this mighty magnet to be attached to surfaces such as wood, aluminum, stainless steel, etc. And it's reversible, so it can be oriented either north-side-up or south-side-up with the exact same results.
See our full line of Countersunk Magnets
. This size is also available without the countersunk hole as part number BCC4.