Ensuring Expertise Built In™, the OTR 1-1/2” Cam, 28 Spline, 6” Automatic Slack Adjuster is engineered with high-performing, high-tolerance gears, splines, clutch, and surface mechanisms. This Meritor-style automatic slack adjuster has a low-maintenance design that makes it easy to install, maintains a uniform distance between the brake drum and lining, and maximizes the vehicle’s service life. This lightweight, dependable automatic slack adjuster enhances your semi truck's brake performance and shortens stopping distance. The OTR automatic slack adjuster is a trouble-free solution that thrives in all operating conditions, including weather, sub-zero temperatures or desert heat. In addition, OTR is committed to thorough, in-house designed testing procedures that ensure the quality of each automatic slack adjuster. As a result, this heavy duty slack combines both high-quality and excellent value to meet the demands of the road. FleetPride is your First Click in Heavy Duty®.