Live and learn. For a nut that size, anything made of aluminum is an emergency use only tool. I own one for the large rear axle nut, bought the aluminum one on purpose because I don't want to carry a brick of steel around with me just in case some shop in the middle of nowhere doesn't have a 55mm double hex socket (they don't). It's worked passably the couple times I've needed to use it.
The reseller finally refunded my money. The aluminum one is not worth buying even for a road tool. If I'm stranded in the middle of nowhere I'll use a pipe wrench and worry about the nut later. Buy the steel one!