Product Info Catalog Tools Electrical Tools Testers 6-24V Heavy Duty Circuit Tester 6-24V Heavy Duty Circuit Tester Request a Quote UPC: 805089663050 Manufacturer: Uriah Trailer & Towing Products SKU: 158566 Model Number: UA663050 6-24V, Heavy Duty, Circuit Tester, 6-24V DC Wire Piercing.