The 50% steel and aluminum tariffs could lead to higher prices on everything from cars to home and office supplies.

While some analysts have credited the tariffs Trump imposed during his first term with strengthening domestic production of steel and aluminum, many others have warned that stark new levies can make it difficult for the industry to adjust.

That’s about to double. In a proclamation issued Tuesday, Trump confirmed that the U.S. will begin taxing nearly all steel and aluminum imports at 50% after the clock strikes midnight Wednesday. Steel and aluminum from the U.K., meanwhile, will continue to be levied at 25% due to a recent trade deal.