Description Made with exquisite craftsmanship and universal hex design, it has excellent durability and practicality, can help you complete the disassembly of screws and bolts more efficiently and conveniently, and provide you with more convenience. Features -Color: Black. -Material: Chrome-vanadium steel . -Size: About 4.00X3.20X2.90cm/1.57X1.26X1.14in. -Specification: 17mm; 18mm; 19mm; 20mm; 21mm; 22mm; 24mm; 27mm. - Hex socket design provides more access to fasteners in tight confines - Chrome-vanadium steel material construction for exceptional strength and durability. - It has good process details, high efficiency and durability, and is not easy to rust or damage. - Made of sturdy chrome-vanadium steel materials, it will not be easily damaged. - Flexible and practical, easy to install, and can be disassembled with an electric wrench. Hex socket design provides more access to fasteners in tight confines|Chrome-vanadium steel material construction for exceptional strength and durability |It has good process details, high efficiency and durability, and is not easy to rust or damage |Made of sturdy chrome-vanadium steel materials, it will not be easily damaged |Flexible and practical, easy to install, and can be disassembled with an electric wrench