The HALDEX 5.5" arm 10 spline automatic slack adjuster kit features a spline configuration designed to provide a precise fit and consistent performance in braking systems. Its automatic adjustment mechanism minimizes the requirement for manual brake adjustments, aiding in maintaining optimal brake shoe-to-drum clearance. The adjuster kit includes a multi-position clevis for customization, allowing adaptability to various setups. Additionally, it is compatible with numerous heavy duty vehicle brake systems, offering versatility across different applications.