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 1/2-inch 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 Included -- Set include 1/2-inch drive high torque impact sockets (metric): 10mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 19mm, 22mm, and 3/8-inch socket adapter. Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding. Specification: Color: Black Material: CR-V Square Socket Size: 1/2in Socket Adapter: 3/8in Hex Socket Size (metric): 10mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 19mm, 22mm Length: 80mm Package List: 9 * Deep Impact Socket (1/2in) 1 * 3/8in Socket Adapter 1 * Storage Box