As said aluminum is not magnetic its non ferrous. Also aluminum is very weak that's why bear cans dint easy what's more there structure a stronger, plus internal pressure, I would say on than a large flat surface for a steebook it get dinted in no time..
They do dent very easily, which is another reason I was 88% sure they're Aluminum, but they are ferrous, which shocked me.
Anyway, this is the coolest looking set I've ever seen, if the photos aren't deceiving.
ALL steelbooks should have art inside the cover & have a semi-transparent sleeve.
Was expecting mine on Monday, but the delivery date now reads 10-Aug, Argh!
no later than 19:00, but the final delivery is done by the Postal Service, so that is nice, because they actually have me sign for it & are usually here between 15:00 & 16:44