Proto Tools 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, and 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. Features These metric socket sets come with drive tools and an assortment of sockets and socket bits for a range of fastener sizes. They come in sizes that are measured in millimeters to fit fasteners with a metric size head. Standard Socket Count/Style / (16) 12-Point Standard Socket Style/Size / Standard 12-Point: 19 mm, 21 mm, 22 mm, 23 mm, 24 mm, 26 mm, 27 mm, 29 mm, 30 mm, 32 mm, 35 mm, 36 mm, 38 mm, 41 mm, 46 mm, 50 mm Deep Socket Count/Style / None Flex Socket Count/Style / None Socket Size Range / 19 mm to 50 mm Drive Size / 3/4 in Drive Type / Hand Material / Alloy Steel Finish / Chrome Impact Rated / No Insulated / No Locking / No Non-Sparking / No Reversing / Yes Measurement Type / Metric Includes Socket Bits / No Includes Wrenches / No Tether Ready Drive Tools / Not Tether Capable Tether Ready Sockets / Not Tether Capable Drive Tools Included / 20 in Quick-Release Ratchet 2 Container Type / Plastic Case Container LxWxH / 21 in x 14 1/4 in x 3 11/16 in Container Features / Dust Resistant Corrosion Resistant / Yes Grip Style / Knurled Head Shape / Pear Head Thickness / 1 5/16 in Head Width / 2 1/2 in Includes / (3) Drive Extensions 4 in, Sliding T Handle 18 in Minimum Arc Swing / 15 Degrees Number of Geared Teeth / 24 Number of Pieces / 21 Socket Shape / 12-Point Socket Size / 19 mm, 21 mm, 22 mm, 23 mm, 24 mm, 26 mm, 27 mm, 29 mm, 30 mm, 32 mm, 35 mm, 36 mm, 38 mm, 41 mm, 46 mm, 50 mm