14x10mm 2 Hole Slide Clasp w/Magnet Antique brass nickel-free plated over lead-free pewter.  Good for most people with sensitive skin. Excellent quality – it does not stick on opening and closing. To fasten the clasp, you line up the two sides, and then the magnet assists in pulling it closed.  Once closed, it is secure.  To open, pull one half up and the other half down.