Constructed of heat treated chrome vanadium steel with a professional-grade, black phosphate finish for anti-oil, anti-rust, which is a type of alloyed tool steel with great strength and durability for high-intensity long-term work

The 6-Point hex socket design avoids round-off deterioration caused by impact and electric wrench under high torque and hammer pressure

The sockets set are stored in a sturdy and strong blow molded case. Each socket or extension bar has its own place inside the case, which makes it very easy to find and organize

High-contrast and visible laser-etched markings on corrosion-resistant black phosphate finish makes it easy to identify drive socket sizes, specs, and measurements even in dim light

11 PCS 1/2" metric size sockets: 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 21mm, 22mm, 24mm. 11 PCS 1/2" SAE size sockets: 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8", 15/16", 1". 2 PCS 1/2" Hexagon Extension Bars: 3", 6". All these items are packed in a strong case