The Klein Tools Boroscope ET16 is a free Android application designed for professionals in the business and productivity sector. It is developed by Klein Tools Inc. and allows users to inspect hard-to-reach areas with ease. The application features a 9mm camera surrounded by six LED lights attached to a 10-foot armored gooseneck cable.

The digital camera has a USB Type-C and micro-USB connection, making it compatible with most Android devices. The camera and video output are displayed on the Android device using the free Klein Tools ET16 Borescope App. One of the most significant advantages of this application is that it does not require batteries as it is powered by a device connection. Overall, the Klein Tools Boroscope ET16 is an excellent tool for professionals who need to inspect hard-to-reach areas with ease.