With the 20-piece deep combination socket set, you can be sure you have the right tool for the job. The set includes a variety of deep sockets for your convenience. The sockets include DirectTorque™ technology to help prevent rounding of fasteners and to provide better grip. Product Details Finish: Chrome Includes:(9) 1/4 in Drive SAE Deep Sockets of Size 3/16 1/4 5/32 9/32 5/16 11/32 3/8 7/16 1/2 (11) 1/4 in Drive Metric Deep Sockets of Size 4 5 6 7 8 9 10 11 12 13 14 Number Of Pieces:20 Type: Metric/SAE Features Lockable stacking cases Knurled beauty rings help reduce slippage for hand tightening applications Removable internal tray Durable transparent lid Removable inner blow molded case fits into large tool box Stackable set of case that allows for easy transport Anti-slip design delivers 400% more griping power to help reduce fastener damage and provide torque