Genera PROTO®️ Industrial Tools, part of Stanley Black & Decker's Industrial & Automotive division manufactures, markets and sells industrial hand tools to professionals worldwide. Pros who work the most demanding jobs, demand the most from their tools. Which is why every day, all over the globe, millions of workers reach for PROTO®️ Industrial Tools. Our tools tackle heavy-duty industrial applications, like auto, steel and airplane manufacturing plants, chemical factories, refineries; and transportation, fleet, truck and transit maintenance facilities, and more. In fact, PROTO®️ branded industrial tools are some of the most durable tools available – exceeding ASME standards. Their design and product features reflect the direct knowledge and experience of professionals. Developed according to strict ergonomic standards, PROTO®️ Tools offer special advantages such as enhanced shock absorption and reduced slip, as well as unique designs that improve efficiency, productivity and are easy to use. - Metric socket sets come with drive tools and an assortment of sockets for a range of fastener sizes - They come in sizes that are measured in millimeters to fit fasteners with a metric size head Socket Size Range / 21 mm to 60 mm Drive Size / 3/4 in Drive Type / Hand Finish / Satin Measurement Type / Metric Standards / AS4283, ASME B107.1, ASME B107.500 Drive Tools Included / 20 in Pear Head Ratchet Includes / 3/8 in F x 1/2 in M AdaPointer, Number of Pieces / 28 Socket Shape / 12-Point Socket Size / 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, 32 mm, 35 mm, 36 mm, 38 mm, 41 mm, 42 mm, 46 mm, 50 mm, 54 mm, 55 mm, 58 mm, 60 mm