Product Description CTA Manufacturing Corp. started in 1978 with a few specialty tools and a lot of great ideas. After spending over 25 years setting up worldwide distribution for the biggest names in the business, the founders of CTA decided to take some of their own ideas to market. Originally named "Classic American Tools", the company expanded from manufacturing about 20 Specialty Tools to well over 1000 tools under the CTA name today. Factories are located worldwide, manufacturing Specialty Tools to meet the demands of today’s technicians. From Timing Tool Kits to Extra-Thin Wall Deep Sockets, CTA offers the widest range of professional automotive specialty tools in the market. Whether tuning up your BMW E46 M3 or removing one-off wheels on a Lamborghini Huracan, CTA supplies you with the right tools needed for the job! Welcome to CTA – we look forward to serving your Specialty Tool needs! From the Manufacturer These Heavy-duty, Chrome Molybdenum Steel, heat-treated sockets are build for strength, and durability. Features color-coded anodized finish, protective plastic sleeves to prevent scratching of wheels and lug nuts, plus internal plastic magnetic inserts that are removable to service longer bolts. All sockets are 1/2-Inch drive. Sizes include: 13/16-Inch, 7/8-Inch, 1-Inch, 1-1/16-Inch, 17mm, 19mm and 21mm hex. Packed in blow mold case.