【High Security】The customers cannot take out the goods from the wall hook without the clerk permission . The "STOP LOCK" magnetic lock makes your store safer and reduces personnel management costs. 【High Quality Material】 Made of high quality ABS plastic material, the product can be used for long time, but still with good color gloss and high visibility 【Compatible Size】 The magnetic lock inner hole size is 6mm (0.236 Inch), suitable for hooks of 4.5-5.9mm(0.178-0.23Inch). This product is black type, If several different colors models are applied in store together, you can easily classify different products of your store only through color of lock. 【Easy to use】Compact and delicate style are very convenient for storage. Attach the magnetic unlocker to the bottom of the magnetic lock, you can unlock the lock quickly and easily. (Key need to purchased separately) 【Wide Application】The security locks can be widely used in retail store, bookstores, pharmacies, auto parts stores, shopping centers to display headphones, batteries, books, molds and other products. When the clerk picks up the goods, the clerk can also be reminded to replenish the products.