You may have read the Insurance Grading article also and noticed that there are specific strengths that a padlock must meet in order to gain a specific insurance grade. As such, many of the major manufacturers have testing facilities to ensure their products meet the grade before taking them to market. Below is a video we filmed in the ABUS testing facility in Germany where they show us a couple of the important tests that simulatate someone using a big lump hammer and also a large crow bar to twist off the padlock.