SG Tool Aid 21300 Heavy Duty Circuit Tester for 18, 24 and 36 Volt Systems
- Checks AC and DC wiring up to 36 volts
- Use to check series-parallel switches and solenoids on tractor-trailer starter systems
- An absolute must for the trucking, farm, heavy equipment and trailer industries
- 48" ground wire
- Probe Length: 6"
