Features and Benefits:

• Set includes the following sizes: 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. and 5/16 in.
• Forged from the finest chrome molybdenum alloy steel - the best choice for strength and durability
• Radius corner design - to extend the life of fasteners
• Sockets are included in a heavy-duty blow molded case

This is a seep impact socket set. It has 9 pieces. It is 1/2 in. drive.