Strong ceramic disk magnet (grade 5) with polished edges and center dimple in one side to identify the North. Diameter of the disk is 3/4 inch (18 mm) and the thickness is 0.2 inches (5 mm). The edges of this ceramic magnet are polished for safety and enhancing the durability.
Disk Diameter: 3/4 inches (18 mm)
Thickness: 0.2 inches (5 mm)
Weight: about 9 grams