This was made to vacuum the air out of my gallon size bags that I use to store not in use filament.
Was designed to fit my Dyson animal DC31. I believe as long as your Dyson has the curved step on the attachment, it will work.
This is my first print uploaded. Just before uploading I did see someone made something similar for a different hand vacuum (I believe it was for a V10 or V12, this one will not fit)