Features1Lightweight Design: The unique perforated hollow design significantly reduces the weight of the screw, providing a lighter and faster riding experience for competitive road racing. 2Enhanced Aerodynamic Performance: The hollow design not only reduces weight but also decreases wind drag during high speed riding. The aerodynamic benefits significantly improve speed, helping you overcome subtle obstacles in the air. 3Precise Fit: Specifically designed for R8000 components, the screw ensures an fit with the rear derailleur, enhancing shifting accuracy and smoothness, and make every gear shift is more responsive and reliable. 4High Strength Material: Crafted from high grade ti alloy, the screw maintains sufficient strength and reliability under extreme light weight, ensuring durability without deformation for long term use. 5Aesthetic and Practical: The perforated design reflects modern industrial aesthetics and practical considerations, showcasing sophistication and professionalism in your vehicle's details.SpecificationItem Type:CyclingRearDerailleurScrewMaterial: Ti AlloyPackage List1 x Screw1 x Sticker