If you link to the product page on the wrenches, you can encourage readers to check them out, and you tell Google what the page is about.
Let’s say that you have a page for different types of wrenches. Then, you write a blog post where you mention those wrenches for a DIY project. If you link to the product page on the wrenches, you can encourage readers to check them out, and you tell Google what the page is about.