https://www.theguardian.com/us-news/2023/dec/09/biden-administration-emergency-authority-tank-shells-israel

The sale will be from US army inventory and consist of 120mm M830A1 MPAT tank cartridges and related equipment.

https://en.wikipedia.org/wiki/M830

The M830 HEAT-MP-T, 120-mm cartridge is a direct translation of the German DM12A1 round with the exception that a United States design fuze system and explosive

This video also suggests that they go boom