Features: Long Service Time -- High strength impact grade CR-V sockets withstand more torque from impact tools and ensure longevity. Premium black oxide finish provides maximum protection from rust and corrosion. Enhance Stable Design -- Concave 6-point hex socket design grips the flat sides of fasteners, not just the corners, preventing round-off deterioration under high torque and hammering stress when used with impact and electric wrenches against fasteners. Visible Size Code -- All 1/2inch deep impact sockets are engraved with size mark for quick identifies drive socket specs and measurements. Classification Box -- A solid plastic storage box is included for convenient drive socket organize and store, and make socket transport more easy. Most-Used Size Are Inlcuded -- Set include 1/2inch drive high torque impact sockets (metric): 10mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 19mm, 22mm, 24mm, and with length 80mm long. Specification: Color: Black Material: CR-V Square Socket Size: 1/2in Hex Socket Size (metric): 10mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 19mm, 22mm, 24mm Length: 80mm Packing List: 10 * Deep Impact Socket 1 * Storage Box