Durable - 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.

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

Sturdy Case - The sockets set are stored in a sturdy, 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.

Laser Etched Size - High-contrast and visible laser-etched markings on corrosion-resistant black phosphate finish make it easy to identify socket sizes, specs, and measurements even in dim light.

What You Get - 16 PCS metric size sockets: 10 mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm, 25mm. All these items are packed in a robust case.