This is not a ground breaking rule changes but its something that NASCAR wants to see changed. Starting next year, all track bar and wedge wrenches will need be yellow. We don’t know for sure but we’re guessing that it has something to do with being able to see it with the video cameras that NASCAR implemented last year. Once again, that is just a guess as to why they want them all the same color but for years teams have had all kinds of colors on their wrenches. In some cases it was to help the carriers know which wrench was a right side wrench vs. left or even to help determine if it was their track bar wrench vs. wedge wrench. Either way, teams will now all have the same looking wrench for the races. The actual rule book reads as such:

21.2.5 Wrenches
a. Wrenches used to manually adjust the track bar and/or left and right side rear jack screw during a pit stop must be painted bright yellow.

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