This is a new, unused item. Tangle Removal: The Hesiry professional grooming brush removes 95% of pet tangles. It removes invisible deep hair, quickly removes loose hair, and can also dissolve further deep hair. It can also thin out a large volume of hair, making it ideal for long-haired cats and dogs. The perfect choice for cleanliness! The "release button" for hair allows you to easily remove the hair attached to the brush. There's no need to manually remove it from the brush. Safe for the skin, we have adjusted the cog more than dozens of times through experimentation, removing sharpness, and making it safe for your pet's skin. Professional grooming tool: Recommended over professional trimmers, it relieves stress caused by hair for you and your pet.