Slack Adjuster Wrench - 9/16 9/16” Automatic Slack Adjuster wrench is specially designed to aid in the installation and servicing of Bendix brand air braking systems on heavy duty/long haul trucks and trailers. .Built in ratcheting mechanism provides a full 360-degree rotational swing for ease of operation at any angle. .Dipped handle provides a comfortable non-slip grip during use even when handled with wet or oily hands. .Extra long steel handle for added reach and increased torque necessary to overcome anti-reverse mechanisms. .Protective sleeve on the drive end helps keep dirt, grime and other contaminates out of the ratcheting mechanism for longer tool life. Extra deep reaching 9/16” hex head for accessing adjusters in recessed locations. 45030