1. Size Type: Yshaped 3way bike hex key; Hex Size: 2.5/3/4mm; Total Length: 105mm/4.13 inches; Surface Treatment: Heat Treated Chrome Plated; Color: Yellow Silver Tone; Weight: 36g 2. Material Our Yshaped threeway wrench is primarily made of 40Cr steel, which boasts strength and hardness, as well as resistance to oxidation, corrosion, and shock. It is durable, resistant to breakage, damage, or deformation, and ensures longterm use. The handle is crafted from lightweight PP material, offering a nonslip, wearresistant grip while safely protecting the wrench bar. 3. Features This threeway socket wrench features a unique Yshaped design. The handle fits comfortably in the hand, providing ergonomics and technical leverage, making the wrench easier to control with minimal effort. Its compact design incorporates three different sizes, making it lightweight, practical, and portable. 4. Application The portable Allen key is ideal for outdoor cycling and serves as an essential tool for bicycle and maintenance. Additionally, this wrench set can meet your daily needs for indoor furniture assembly, home maintenance, electronic equipment, and mechanical tools.