1. This grooming tool removes loose hair directly from your dog before it is thrown into the . The collected hair is then sucked directly into a vacuum cleaner. The vacuum-assisted dog grooming suction is broken down during grooming. 2. Quickly and easily removes loose undercoat, while effectively combing deeper into the skin and stimulating skin circulation. 3. When you are done brushing your pet, simply click the button and the bristles retract into the brush, which makes it easy to remove the hair from the brush, so that it is ready to be used next time. 4. This dog hair vacuum attachment comes with a trigger lock, which allows you to use the vacuum cleaner easily and conveniently by being installed on the power button of the vacuum cleaner, NO NEED to hold the buttons manually, NO WORRIES about hand fatigue. 5. The adjustable cutting comb is applicable for cutting hair of different lengths; and removable guide combs allow for quick and easy comb changes and increased versatility.