Update your semi truck with proper maintenace tags, with the J.J. Keller Inc. 6.5" x 3.5" Out of Service / Maintenance Required Tags that ensures you're Ready for the Road Ahead™. Due to their bright red coloring, these visible tags are able to mark equipment that is not available or in need of repair. Fashioned with 13 data points to permit detailed descriptions. FleetPride is your First Click in Heavy Duty®.