$44.99, located in Niagara Falls, New York, USA (143**), item #284251624756
Bones can be broken by larger magnets. Neodymium magnets are also brittle. They can chip, crack or shatter if allowed to slam together. Gloves and eye protection glasses should be worn when handling these magnets, because shattering magnets can launch pieces at great speeds and sparks may be produced.