Features: Suitable for using in pubs, wine shops, hotels, supermarkets, etc, also can make it as a promotional gift to customers. Come with this code lock ,your wine will be very safe.It can prevent your wines being stolen or switched. Great for preventing children, teens drinking the wine. Made of high quality plastic and zinc alloy with 3-Digit combination code. Password Setup: Step 1,Press and hold the silver round button on top; Step 2, Adjust the number on top( initial password: 000) to a new password you prefer; Step 3, Release the button then the password setup finished. The diameter of the bottle mouth should be between 26-28cm, or it doesn'for t fit. Specifications: Material: ABS and Zinc Alloy Lock Inner Diameter: 28mm/1.1 inches Package Includes: 1 x Wine Stopper Lock note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.