Neodymium Magnets (16 Pack, Solid)

Neodymium magnets are some of the strongest commercial magnets available. Also available with a protective coating to prevent the brittle metal from chipping (EM-8621).

Size: 13 mm dia. x 5 mm. Plastic case included.

https://www.pasco.com/products/lab-apparatus/electricity-and-magnetism/magnetic-fields/em-8648#specs-panel