The Haldex 1.5" Cam / 10-Spline 6" Automatic Slack Adjuster is the perfect solution for ensuring that your brakes are adjusted correctly and last longer. It is designed for use in both tractor and trailer applications. With this automatic slack adjuster, you can rest assured that your brakes are properly adjusted and will require less frequent replacements. FleetPride is your First Click in Heavy Duty®.