Product Details: Update your truck with the ideal amount of tension in the brake linkage, with the OTR 1.5" Cam / 28-Spline / 5.5" / 6.5" Manual Slack Adjuster that ensures you're Ready for the Road Ahead™. This replacement component checks the amount of slack between the brake shoe and the brake drum, and automatically adjusts 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®.