About This 【Size】: 2mm ball end tip, Long Arm Length: 106mm / 4.17-inch; Short Arm Length: 18mm / 0.71-inch. 【Flat Head & Ball Head Design】: The flat head design allows for a longer reach, provides a larger contact area and greater torque, and can save more effort during use; the ball head design allows for a 25-degree entry angle, which is easy to work in narrow spaces and can enhance leverage. for tighter fasteners. 【High Hardness and Durable Material】: The hex keys are made of high-quality chromium vanadium steel material, with exquisite workmanship, smooth edges and no burrs, strong strength, corrosion resistance, rust resistance, and high hardness, providing you with maximum durability. 【Extended Long Arm】: The L-shaped long arm design provides extra reach and leverage, ensuring comfortable operation and maximum torque, reducing hand fatigue during prolonged use. 【Wide Application】: Suitable for repair and assembly work, easily remove and install most screws in cars, bicycles, scooters, furniture, appliances, instruments and equipment, repair/adjust machines, etc. This versatile tool set is essential for any DIY enthusiast, handyman, or professional mechanic. Overview Brand : TOP-VIGOR Material : Chrome Vanadium Steel Item Weight : 8 Grams Item Package Quantity : 1 Head Style : Flat