20 Pc. Back Probe Kit Use to back probe harness connectors, fuel injectors and automoitve sensors. Straight, 45 degree & 90 degree stainless steel probes in .027 and .040 diameters. Color coded for easy identification. Insulated body for testing up to 30 volts. Compatible with standard 4mm plug. 12 Extension leads quickly plug in to permit testing in recessed areas. Probes easily insert into automotive connectors. Kit includes 3 probe configurations in five colors and five matching color extension leads 23500 Yes - LEAD