Snap-on 9pc 1/2″ Drive SAE Deep Socket S-Series Set 1″-1.5 Flank Drive 12pt Professional USA Made. Professional-grade Snap-on deep socket set featuring the patented Flank Drive system that provides 15-20% more turning power and reduces fastener damage. Each socket is precision-engineered from strong carbon alloy steel with a protective nickel-chrome finish that resists corrosion2. The double chamfer design enables easy engagement with fasteners, while the four-groove detent system ensures secure attachment to ratchets. Drive Size: 1/2 inch. Socket Range: 1 inch to 1-1/2 inch. Material: Carbon alloy steel. Manufacturing: Made in USA. Feature: Flank Drive system. Includes the following specific wrenches. CONDITION NOTE: Used, and in excellent condition. Some wrenches may have some light surface scratches and dirt from storage & use (see pictures)! Does not include the original box, storage tray, or packing materials. See detailed high resolution (zoom-able) pictures to know what you are purchasing. Source of product research for this listing was from an AI engine and I cannot be sure that it is 100% accurate. I encourage you to confirm this information with your own research. Snap-on was founded in 1920 in Milwaukee, Wisconsin, and revolutionized the tool industry with their innovative interchangeable socket concept. Snap-on sockets, deep socket set, 1/2 drive sockets, flank drive, professional tools, mechanic tools, SAE sockets, USA made tools, 12 point sockets, socket set, automotive tools, heavy duty sockets, industrial tools, tool truck, kenosha tools. If you have any questions feel free to contact me.