00:00Why are these people tapping the car's surface?
00:02Well, they're actually checking for hidden body repairs,
00:04and the tool they're using is a body filler tester.
00:07This device makes the process quick and easy
00:09by using a magnetic tip to detect filler beneath the paint.
00:12If the reading turns blue or green,
00:13the body is original and untouched.
00:15But if it's yellow, that means a thin layer of filler was applied,
00:18likely for minor repairs.
00:19A red reading signals a more noticeable amount of filler,
00:22while black suggests excessive filler
00:24that could be hiding serious damage.
