Features & Benefits: Two tools in one - works as a circuit tester and jumper wire. The probe, handle, cord and clamp are reinforced for durability. Comes with a strain relief spring on the cord. Heavy duty circuit tester for checking low voltage up to 28 volts. Tester becomes a jumper for powering electrical components or as a ground 2-in-1 tester that tests circuits up to 28 volts and works ad a jumper wire for power or ground.