The Power Probe Deluxe Lead Series Combo Kit, No.PPBC201AS, includes a Power Probe Basic unit, a 20’ power lead extension, 1’ wide by 3’ deep by 5’ high lead adapters, both large and small piercing probes, male-to-male and female-to-female adapters and a switch latch, in a blow molded case. The Power Probe Basic easily activates electrical components, detects circuit polarity and continuity, as well as tests wires for bad ground connections and resistive power feeds. It does all of this without performing time-consuming voltage drop tests. It also works with 6V to 12V DC systems.