This is a new unopened griddle cleaning kit.

Some information from online:

With just one convenient package, this all-inclusive kit gives you everything that you need to quickly and effectively clean your griddle throughout the day or at the end of a busy shift. This powerful system can clean a dirty griddle 40% faster than the leading competitive system, allowing you to clean a soiled griddle in just 3 - 5 minutes!

This kit comes with (6) 3.2 oz. liquid griddle Quick Clean packets. To start the cleaning process, first squirt the liquid onto a medium-hot griddle between 300 - 350 degrees Fahrenheit. Then watch as the powerful bubbles lift and loosen stubborn burnt-on food soil and grease from the griddle surface.

or all of your cleaning needs, this kit comes with (6) 4" x 5 1/4" heavy-duty cleaning pads and (1) 16" multi-purpose pad holder. Attach the heavy-duty griddle pad to the pad holder and apply light pressure to gently scour the griddle. The included griddle pad is among the first and only scouring pads to be certified as food safe and fit for purpose by HACCP International.

Finally, to leave the griddle clean, use the squeegee to push the remaining liquid into the grease trough. When compared to alternative methods, this simple 3 step process is safer for workers and food, quicker and easier, and even more cost effective.