The product is a set of 12 M12 x 1.75 x 24.0 carbon steel inserts from Time Sert, designed for automotive applications. These inserts are metric in measurement and come with free shipping in the USA. The manufacturer part number is EX7105124, and the product is a single item with no modifications or custom bundles. Perfect for those needing a high-quality threading tool solution, this product offers durability and precision for various automotive tasks. WH2 SS 3