Ingersoll Rand 6-point impact sockets are built of top quality materials for impact-grade toughness in high-torque applications. Top quality means superior performance and durability. The perfect solution for everyday tightening and loosening problems. Drive size/type: 3/8-inch square. Socket depth: deep. Kit includes metric socket sizes: 9mm, 10mm, 11mm, 13mm, 14mm, 15mm, 17mm, 19mm and a plastic storage case for organization and easy portability.