Frank,
if you scroll down on that page until you see the "New Spiral" blades (about 3/4ths of the way down the page) , it is the only section that lists the 3/0 spiral blade. It also says the drill size recommended is a #70. Keep in mind these are spiral blades and if you have not used them they take some getting use to. Some, like me, love them, others hate them. Anyway, that #70 blade is .028" dia or .7112mm in dia. a little smaller than 1/32 which is .07934mm.