Features: 1. Mainly used for anti-theft and display arrangement of goods in large shopping places such as supermarkets. 2. Used with goods hooks, easy to assemble and operate. 3. It not only ensures the safety of goods, but also provides customers with a good shopping experience. 4. Simple structure and workmanship, can be used repeatedly. 5. Using special magnetic unlocking device to unlock, ordinary key can't open. Specification: Item Type: Anti-theft Hook Lock Material: ABS Color: As Pictures Show Optional Hole Diameters: 4mm, 5mm, 6mm, 7mm, 8mm Quantity: 100Pcs Length: Approx. 40mm / 1.6inch Package Weight: Approx. 800g Package List: 100 * Anti-theft Hook Lock