Braxton-Bragg’s Dust Muzzle Ultra that can capture up to 99 percent of the unhealthy dust created during grinding. The DMU8 fits all 4-5 or 7-9 in. electric and pneumatic angle grinders. It has a side-mounted exhaust port that uses the centrifugal force created by the grinding wheel to send the dust into the vacuum hose. The design allows more dust to be removed from the workplace with less power. It can be used with a 2 hp industrial shop vacuum.