Product Details: The 12-foot retractable wire allows for easy access to hard-to-reach areas, while the heavy-duty construction ensures it can withstand the rigors of daily use in your fleet maintenance operations. This tester features a rugged, reliable design and is built to last, minimizing downtime and maximizing productivity. Spend less time troubleshooting and more time keeping your fleet on the road. The SGT-27300 is an indispensable tool for any professional fleet maintenance operation that demands speed, accuracy, and longevity. Invest in quality; invest in efficiency. Invest in the S&G Tool Aid Corp. SGT-27300.