The cylindrical parts are magnets, and the entire necklace has magnetic force. [Details] • Length: Approx. 46cm • Material: Unknown • Condition: Minor scratches due to age. • Magnetic attraction has been confirmed. [Notes] • This is not precious metal (gold, platinum, etc.). • As this is a magnetic product, please be careful about contact with watches, magnetic cards, etc. • Sold as-is with only simple cleaning. Immediate purchase is welcome. Thank you.