This is a brand new, unused attachment compatible with Dyson vacuums. It's a grooming brush for dogs and cats, allowing you to clean pet hair from the brush without touching it. Since pets often dislike the sound of the vacuum, you can brush them first and then use the vacuum to remove the hair. PetPro ABS Round Pet Hair Remover Brush, Dyson Vacuum Attachment for Dogs and Cats, Home Cleaning Accessory, Pet Grooming Compatible with Dyson V7, V8, V10, V11, V12 Detect Slim, V15, and Digital Slim (SV18). Thank you for looking.