The Klein Tools ET40VP Electrical Kit is a portable voltage and continuity tester designed for electricians and DIY enthusiasts. With a digital display, this unit provides accurate readings for AC/DC voltage levels. The compact plastic design, measuring 6 inches in length, allows for easy handling and storage. This kit includes two units, perfect for testing various electrical connections and components in the home or workshop. Made by Klein Tools, a trusted brand in electrical testing tools, the ET40VP is a reliable and efficient tool for troubleshooting and ensuring electrical safety.