If you are looking for a powerful magnet to put in your oil pan or attach to an oil filter, this is the magnet you need. The D66SH cylinders are made with grade N42SH (SH = Super High Temperature) material. The SH material means that the magnets can be heated to 300° F without any loss of magnetic strength, unlike standard neodymium magnets that begin to lose strength at 175° F. Suitable for many high temperature applications.
This size is also available in grade N52 as part number D66-N52
and in grade N42 as part number D66