Features and Benefits:

• Forged from the finest chrome molybdenum alloy steel - the best choice for strength and durability
• Radius corner design - to extend the life of fasteners
• Sizes include: 5.5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm and 13mm.
• Comes in a heavy molded storage tray

This is an impact socket set. It is 9 pieces. Sockets are 1/4 in. drive.