Rear axle nut on 2002 ford explorer

hey all, just a quick question....i am about to embark on replacing a rear hub and bearing on my explorer and since i gave up working on cars 25 years ago, when all you needed was a 1/2", a 9/16" a hammer and screwdriver to fix most anything on your ride, can anyone tell me what size the rear axle nut is on this vehicle. since i gave up most of my tools years ago and the majority of it all is metric today anyway, i can get what ever tools i need here at work so i can have this job done in short order. any input is greatly appreciated.
thnx spike :banghead: