This is a vintage Regina Brand Vacuum Shag Rake attachment. I believe this was meant for vacuuming shag rugs back in the day when they were popular. I do not know what model vacuum this would fit but box states it fits all canister vacuums. However I imagine the vacuums its referencing would be much older models. I do not know if it would fit newer vacuums.

 This is the attachment ONLY. Comes with original box which is open but the attachment appears to be brand new. PLEASE SEE PHOTOS for details on condition of box and contents.

It was found amongst some old stock at a local independent hardware store. 

Selling AS IS. Please see photos.