1. Hook security stop lock 2. color: white, black, red... 3. diameter: 4, 6, 8, ... , 5mm 4.the way to unlock: detacher Hook security stop lock Security Hook, display hooks,pegboard hooks,supermarket hooks,gift shop ... details information1. The stop lock is used for display sales of big malls, chain shops, exhibition places, digital shops, etc.2. It ...