The Blue Point FBM 322 Extended Feeler Gauge with 2 Blades is a single, high-quality tool designed for precision measuring in automotive applications. Made in the USA by Blue Point, known for their durable hand tools, this gauge offers an unspecified length warranty for long-lasting reliability. With its extended feeler blades, this gauge provides accurate measurements for a variety of tasks, making it a valuable addition to any mechanic's toolbox.