The Axa Multi Chain Guard is an enclosed chain guard that's ideal for city bikes. With this chain guard, you'll cycle more safely because clothing and dirt can't get caught in the chain, preventing falls. In addition, the chain guard optimally protects the quality of your chain by keeping moisture and dirt out. This significantly extends the life of your chain. The Multi chain guard is easy to install using a disc and click mount, and the click box at the rear ensures a secure closure. The base guard is made of polycarbonate (light smoke) and the inner plate is made of ABS (black). This chain guard is suitable for 38-tooth sprockets. Product Specifications: - Color: Transparent/Black - Suitable for 38 teeth - Material: Plastic - Length: 63.5 cm - Height: 20 cm - Crankshaft diameter: 39 mm - Weight: 470 grams