Model PB50 PB100 PB500 PB600. About ANCEL PB50---13FT. It works like a test light that can power circuits or provide a good known ground. You can power or ground a circuit directly through the top of the device.
ANCEL PB50 Automotive Circuit Tester 12-24V Electrical Power Circuit Probe Tool
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ANCEL PB50-PB600 Automotive Circuit Tester 12V 24V Power Circuit Probe Test
