From the Manufacturer
The Goldblatt Dust-Free Sander virtually takes the mess out of drywall sanding. Designed to be attached to a standard shop-vac, this handy tool eliminates 90-Percent of the dust and mess associated with traditional drywall sanding methods. Equipped with special quick-change spring steel clips that make screen or paper changes a snap. Works with most standard die-cut sandpaper.
Dustless Sander Kit, Eliminates Harmful Dust & Messy Clean Up, Includes Sanding Head, 6' Vacuum Hose, 2 Hose Adapters & Drywall Sand Screen, For Use With Shop Type Or Industrial Vacuum Cleaners.