STOP LOCK Function Research indicates customers are willing to purchase products that they can touch and feel, and the quick and easy locking and unlocking allows you and your employees to access and provide a quick service to your buyers while the product stays safe and secure. Feature 1.Suitable for diameter of hook from 4.5mm – 5.9mm. 2.Compatible with single hook, double hook and hook with tag. 3.Easy assembling, easy operation, bearing and tightly. 4.protect the whole displayed commodity in retail stores to anti theft. Application Digital stores, cell phone stores, book stores, pharmacies, auto accessories stores, shopping malls, exhibition places, branded chain stores, experience stores, image stores, flagship stores Product Parameter Main material: plastic and metal Color: Red Inner hole size: 6mm The magnetic removal tool is not included in the pack.