This is the 10322nd most frequent Russian word.
бруски
Bars or blocks.
Here, "бруски" refers to small pieces of wood, used for carpentry or DIY projects.
Я купил деревянные бруски для проекта.
I bought wooden bars for the project.
In this context, "бруски" describes gym equipment designed to enhance grip strength or for other exercises.
Для выполнения упражнения сжимайте бруски руками.
For performing the exercise, squeeze the bars with your hands.
Here, "бруски" refers to metal pieces that are likely used as raw materials in building or structural work.