Many magnets by CMS Magnetics are given four or more stars out of five on Amazon.com. CMS Magnetics offers a variety of sizes, strengths and shapes of magnets, including blocks, discs, cylinders, cubes and speciality magnets.
Magnetic strength grading is based on energy density in the magnet, with higher number grades indicating stronger magnetic performance. CMS Magnetics products that received more than four stars include its N50 grade 3-inch-by-0.5-inch-by-0.5-inch bar magnet, its N45 grade disc magnets and their N45 1.5-inch-by-1.5-inch-by-0.125-inch square magnets. The specialty round base magnets with countersunk holes are also highly rated by consumers and have 150 pounds of holding power. CMS Magnetics also offers sphere and ring magnets, as well as custom magnet design.