The pet shedding tool of vacuum attachment is designed to resolve the pet loose hair, it can become easy operation to overcome the challenges of pet owners. Suitable for different types vacuum cleaners which have circular intake channel – outer diameter from 1”to 1 5/8”to connect with adapter A of extension hose end; or inner diameter from 1 1/4”to 1 3/4”to adapter B, then transfer to A connection; or connect to the groom tool directly if vacuum handle with 1 1/4”outer diameter, the quick connection method – refer to pictures or videos as demo. Not suitable for vacuums that have non-circular, triangular, or too big size shape of vacuum hose handle. Tips for Use: At the beginning, please try grooming pet with vacuum OFF if it is scared about vacuum noise. Turn on the vacuum and push the button to forward to remove the undercoat fur via vacuum suction after the tool with enough hair. Repeat it until pet is groomed well. Or reduce noise via suction adjusted, train pet with treats and patience several times, then your pets will be familiar and enjoy the grooming.