FUNCTION: Providing better experiences and feelings for customers with the safety of the commodities ensured. APPLICABILITY: Suitable for single hook, double hook and hook with price tag. Stop lock can be installed on security display hook that diameter is 4.5mm to 5.9mm. Stop Lock Dimension: 6mm EASY TO INSTALL: No tools are required to install the peg hook locks . It is easy to use ,good quality and durable. YOU WILL GET: 100 pcs pegboard hook locks. The magnetic removal tool is NOT INCLUDED in the pack. 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.Main material: plastic and metal 2.Color: Red 3.Inner hole size: 6mm 4.Suitable for diameter of hook from 4.5mm 5.9mm. Compatible with single hook, double hook and hook with price tag. 5.Easy assembling, easy operation, bearing and tightly. 6.protect the whole displayed commodity in retail stores to anti theft. 7.Open with a magnetic detacher key(not included) 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 The product is widely seen in high-end stores and big malls to display lots of commodities like headphones, batteries, books, medicines, cosmetics, mold die parts, bags and LED etc.