The patented Dust Grabber shroud eliminates suction lock while capturing 99 percent of dust. The Dust Grabber uses an exclusive, replaceable polymer seal, which creates a vortex of air around the shroud's edge, allowing the grinder to float like a puck on ice. The polymer can quickly be replaced and does not require the abrasive or steel shroud to be removed. The Universal Adapter allows the Dust Grabber to fit most large 7 in. grinders.