Overview Reviews Product Description Works on any circuit up to 28 volts including many heavy duty applications on large trucks and farm implements. Heavy duty probe, cord and clamp. The probe is insulated with high-visibility shrink tubing to prevent the possibility of shorting the side of the probe to other components. Comes with a strain relief spring on the cord. Lisle Tools Catalog Product Videos Custom Field Harmonization code HTS #9030399090 Manufacturing country US Product Reviews Write a Review Write a Review × Lisle 24V Heavy Duty Circuit Tester 27430 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *