https://www.cfr.org/article/us-aid-israel-four-charts
Most of the aidapproximately $3.3 billion a yearis provided as grants under the Foreign Military Financing (FMF) program, funds that Israel must use to purchase U.S. military equipment and services. In October, the Joe Biden administration said Israel had nearly six hundred active FMF cases, totalling around $24 billion. Israel has also historically been permitted to use a portion of its FMF aid to buy equipment from Israeli defense firmsa benefit not granted to other recipients of U.S. military aidbut this domestic procurement is to be phased out in the next few years. U.S. aid reportedly accounts for some 15 percent of Israels defense budget. Israel, like many other countries, also buys U.S. military products outside of the FMF program.
Additionally, $500 million a year is slated for Israeli and joint U.S.-Israeli missile defense programs, in which the two countries collaborate on the research, development, and production of these systems used by Israel, including the Iron Dome, Davids Sling, and Arrow II. Iron Dome was solely developed by Israel, but the United States has been a production partner since 2014. For instance, the U.S. military contractor Raytheon manufactures Tamir interceptor missiles for Israels Iron Dome at its facilities in Arizona.
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In May, the administration issued a follow-up report [PDF] that found it reasonable to assess that Israel has used U.S. weapons since October 7 in instances inconsistent with its IHL [International Humanitarian Law] obligations. Days later, the White House said it was pausing a shipment of large bombs to Israel ahead of a pending assault on the southern Gaza city of Rafah, although it noted it would continue other military assistance. Civilians have been killed in Gaza as a consequence of those bombs and other ways in which [Israel goes] after population centers, President Biden said in an interview with CNN.
More specifically: laser-guided missiles, artillery shells, 500- and 2,000-pound bombs, vehicles, etc.