5 mm; 6 mm; 7 mm; 9 mm; 10 mm; 11 mm. Drive size. Features: sockets and shafts are crafted from long-lasting alloy steel. Color-coded handles for quick identification. Lightweight, easy-to-grip handles. We build pride. Full lifetime warranty. craftsman.com. For product, service or warranty information contact us at: craftsman.com; 888-331-4569. Made in China.