Features and Benefits:

• Includes sizes: 5/16 in., 3/8 in., 7/16 in., 1/2 in., 9/16 in., 5/8 in., 11/16 in., 3/4 in., 13/16 in., 7/8 in., 15/16 in., 1 in. Deep 8 mm, 9 mm, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 21 mm and 22 mm deep; 3 in. extension and 1/2 in. female x 3/8 in. male adapter
• Forged from the finest chrome-molybdenum alloy steel, the best choice for strength
• Black oxide finish and has etchings for identification
• Included in a heavy-duty blow mold case

This is an impact socket set with 28-piece. Sockets are 3/8 in. drive. Designed to tackle the toughest jobs with solid durability and keeps them pounding job after job.