The DAYTON PARTS fifth wheel jaw lock tester for Holland in black is precision-engineered specifically for Holland fifth wheels, ensuring compatibility and performance. It is designed to accurately test jaw lock tightness, enhancing towing safety by providing clear indications of jaw lock integrity for quick assessments. Made from durable materials, it resists wear, offering robust tool longevity. This tester aids in maintaining proper coupling, effectively reducing the risk of trailer detachment and ensuring consistent and reliable coupling assessment.