19-piece metric crowfoot impact nut wrench set - Sizes: 8 mm to 32 mm. Compatible with 3/8 inch and 1/2 inch drive ratchets, extensions, or torque wrenches. Suitable for a wide range of automotive and mechanical tasks. - Versatile design: Extends the capabilities of common wrenches by reaching difficult angles and hard-to-reach areas that normal sockets or wrenches cannot access. Ideal for demanding car repairs and maintenance. - Durable construction: Each wrench is made from industrial grade heat treated, drop forged chrome molybdenum steel. This rugged material provides long-lasting performance, high torque delivery, and wear resistance. - Improved grip: The tabs on the jaws provide better leverage and grip, allowing for easier attachment and removal. The wrenches glide smoothly over fasteners, increasing efficiency and reducing the risk of slipping. Practical use scenarios - Reaching flare nuts on brake lines and fuel lines in tight engine bays where standard tools cannot access the fasteners. - Accessing fasteners located behind brackets or in tight corners around manifolds and other dense components. - Maintaining mechanical equipment and small industrial machinery that use flare nuts in confined spaces, such as lawn equipment, generators, and similar gear.