Magnetic Box Clasp 25mm 14k Gold Plated Converter for Necklaces (Qty=1) Magnetic 14k gold plated box clasps, strong, converter for necklaces It is 7mm wide , 15mm long, box clasp with also a spring ring attached. USA Made DO NOT USE IF YOU USE A PACEMAKER, INSULIN PUMP, OR DEFIBRILLATOR 1 specified buys 1, 3 buys 3, etc. Instructions included; item discontinued by manufacturer