Ensure your truck is Ready for the Road Ahead™ with the ideal amount of tension in the brake linkage, with the Gunite 1.5" Cam / 28-Spline / 6.5" Automatic Slack Adjuster. With a tension-based design, this replacement component is able to check the amount of slack between the brake shoe and the brake drum, and automatically adjust the distance as needed to reduce overall wear. Manufactured with a compensating mechanism that modifies the position of the pushrod as the brakes wear down. FleetPride is your First Click in Heavy Duty®.