Update your truck with the ideal amount of tension in the brake linkage, with the Gunite 1.5" Cam / 28-Spline / 6" Automatic Slack Adjuster that ensures you're Ready for the Road Ahead™. To reduce the amount of wear in the brakes, this replacement checks the amount of slack between the brake shoe and the brake drum, and automatically adjust the distance as needed. Fashioned with a compensating mechanism that modifies the position of the pushrod as the brakes wear down. FleetPride is your First Click in Heavy Duty®.