- Size - Type: 3-way Y-shaped bicycle hex key; Allen sizes: 4, 5, 6 mm; Bar length: 34 mm (1.34"); Adjacent side length: 120 mm (4.72"); Color: Red and Silver Tone; Weight: 170.5 g. - Material - Wrench body is made of chrome vanadium steel, providing high strength and hardness with resistance to oxidation, corrosion and shock. It resists breaking, damage or deformation for long-term use. The handle is lightweight PP material, non-slip and wear-resistant, protecting the wrench bar. - Features - Y-shape design for a comfortable, ergonomic grip and improved control with less effort. Compact, three sizes in one tool, lightweight and easy to carry. - Applications - The portable Allen key is suitable for outdoor cycling repairs and is an indispensable tool for repairing and maintaining bicycles. It also meets daily needs for indoor furniture, home maintenance, electronic devices and other mechanical tools.