DA = Dual Action. Less chance of leaving circular marks in metal, primer, paint, etc.

Actually early PAINT had lead in it too. Keep that in mind whenever you are sanding an old car or even an old house.

-Boyo


'48 Willys CJ-2A / '55.1 Chevy 3600 / '66 Austin-Healey 3000 / '04 Volvo wagon (parenthood!?)