CMS Magnetics Grade VIII Ceramic Ring Magnet, OD 60 mm x ID 32mm x 10 mm. 2 Pack Industrial Grade High Quality Ceramic Ring Magnet Grade 8 With 3,850 Internal Gauss. 6 Lb Holding Power per Magnet Great Item for Speakers, Science Projects and Magnetic Therapy. Magnetized Through Thickness So That the N and S Poles Are on the Flat Surfaces. High Quality Magnet Made Under ISO 9001 Quality Control Systems