this used teng tool is Expertly crafted for durability and performance, the Teng Tools 651819 Double Flex Wrench is an essential addition to any professional's toolkit. It features a 12-point socket configuration, paired with both 18mm and 19mm sizes to provide versatility for a range of tightening and loosening tasks. The chrome vanadium construction ensures a high-quality, corrosion-resistant tool that's built to last. The wrench's design is geared towards ease of use and efficiency, with a flexible head that allows for multiple access angles, making it ideal for those hard-to-reach places. Whether you're working on cars, motorcycles, or any other project requiring metric measurements, this single-piece, robust tool will deliver the reliability you need.