Check the listing for details. Snap-on diagnostic personality keys. Condition: Used, Made in United States. Listed at 2.00 USD. The Snap-on diagnostic personality keys are a set of specialized tools designed by the reputable brand Snap-on. These tools are specifically made to assist in diagnosing various automotive issues by providing detailed information about the vehicle's performance and condition. With the Snap-on brand known for its quality and reliability, these diagnostic keys offer professionals and car enthusiasts a reliable resource for troubleshooting and repairing vehicles effectively.