This is the 3070th most frequent Russian word.
инструментов
"Инструментов" means "tools" or "instruments" (genitive plural).
The word "инструментов" in this sentence functions as the genitive plural form of the noun "инструмент" (tool), referring to the instruments owned by the speaker and used for their tasks.
У меня много инструментов для работы.
I have many tools for work.
Here, "инструментов" is also in the genitive plural form, used after the word "каждый" (each) to specify possession and relationship.
Каждый из инструментов имеет свою уникальную функцию.
Each of the tools has its unique function.
The sentence does not directly include "инструментов" but demonstrates its singular counterpart and suggests the typical use of tools, indicating their connection to their location of storage and care.