Verifying the brake adjustment on Class 7 and 8 trucks and trailers equipped with S-cam brakes, this slack checker utilizes a four-position handle to provide necessary leverage at the correct angle. This 1-pound (0.5 kg), 3-ounce (85 g) tool functions with both manual and automatic slack adjusters to facilitate quick inspections.

Verifying the brake adjustment on Class 7 and 8 trucks and trailers equipped with S-cam brakes, this slack checker utilizes a four-position handle to provide necessary leverage at the correct angle. This 1-pound (0.5 kg), 3-ounce (85 g) tool functions with both manual and automatic slack adjusters to facilitate quick inspections.