Check the listing for details. MINT Snap-on Tools EECT400G 12-Volt DC Digital Display Circuit Tester. Condition: Used, Made in China. Listed at 74.99 USD. The MINT Snap-on Tools EECT400G 12-Volt DC Digital Display Circuit Tester is a high-quality and reliable tool for electricians and DIY enthusiasts. This circuit tester, featuring a digital display and measuring technology, allows for precise testing of electrical circuits. The green color adds visibility and the Snap-on brand ensures durability and performance. Made in China, this model EECT400 is a must-have for anyone working with electrical systems.