• Three gears of adjustment, control the size of the collar through the different holes connected
• Built-in high-quality cotton wool, lock the liquid and continue to distribute
• You can add essential oil, insect repellent drop, or other liquid (not included) to the hole
• This collar helps to expel insects, keeping your pet healthy

Specification:

• 3rd gear: suitable for 30-33cm pet collar, for cats, small dogs
• 2nd gear: suitable for 33-36cm pet collar, for medium pets
• 1st gear: suitable for 37-40cm pet collar, for large pets

Note: With an injector, insect repellent drop or essential oil is not included.