1. Quenched and heat-treated S2 alloy steel bits, hardness arrived at 58-60 HRC, reducing wear-outs.2. Ball profile design, you can easily tighten and loosen the socket cap screws at a 25-degree entry angle, which helps to get into hard-to-touch places.3. T-handle design provides a firm grip and achieves large torque.4. The hex end is chamfered to slide easily into the fastener, reducing wear on the wrench and fastener head.5. Applied in DIY hand-making, household maintenance, and most machinery and equipment, and office quick repairs.Specification:Material: S2 Alloy Steel, PP+TPRFinish: Chrome Plated, Red PaintSize: 7mmTotal Size: 190mm x 113mm / 7.48-inch x 4.45-inch (L*W)Long Arm Shaft Length: 130mm / 5.12-inchShort Arm Shaft Length: 15mm / 0.55-inchPackage Content:1 x Ball End Hex Key Wrench