Feature: 1. Perforated Aesthetic: Lightweight Art: The unique perforated screw not only reduces the weight of the washer, giving it a light and airy feel, but also showcases a modern minimalist beauty, adding a touch of futuristic technology to your cycle. 2. Enhanced Ventilation, Lower Part Temperature: The perforated screw promotes air circulation, aiding in rapid heat dissipation, reducing part overheating from prolonged rides, and enhancing overall system stability and longevity. 3. Ti Alloy Material: Crafted from premium ti alloy, this washer is not only lightweight and robust, but also highly erosion resistant, maintaining excellent performance and a long lifespan even in harsh conditions. 4. Arch Half Moon Design, Secure Fit: Specifically designed in an arch half moon shape for front derailleurs, ensuring a snug fit between the screw and touch appearance, effectively dispersing pressure to prevent excessive localized stress and ensure secure fastening and accurate performance of the derailleur system. 5. Beauty and Performance: The unique perforation exemplifies the aesthetics of modern industrial design while integrating practical considerations, allowing your cycle to showcase classy taste and professional style in the details. Specification: Item Type: Cycle Front Derailleur Screw Washer Set Material: Ti Alloy . Package List: 1 x Screw 1 x Washer 1 x Sticker