Make sure you have the right tool for the job with this 20-piece socket set. DirectTorque technology helps prevent rounding of fasteners. Knurled beauty rings help reduce slippage for hand tightening applications. Tough Box storage case is compatible with other cases for stackable locking storage. Removable inner tray. Exceeds ANSI specifications. Includes: SAE deep sockets: 1/4 5/16 3/8 7/16 1/2 9/16 5/8 11/16 3/4 13/16. Metric deep sockets: 10 11 12 13 14 15 16 17 18{