Features: High strength aluminum alloys derailleurs pivots bolt with threadlocker coating ensures corrosions resistance, rusts proof durability, and vibration resistant stability for precise gear shifting. Precisions engineered with automatic threadlocker application and color anodized surfaces treatments, this light weight screw combines enhances surfaces hardness with fade resistant aesthetic. Ideal for cycling enthusiasts and professional mechanic puruses reliability fasteners for high performances road bikes, mountain bikes, or commuters bicycles maintenance. Perfect for securing derailleurs assemblies during trail cycling, or routine drivetrains adjustments where moisture resistance and thread integrity critical. Features machined thread and sealing adhesive technology to maintain specifications in extreme cycling conditions, ensuring long terms compatibility with derailleurs systems. Specifications: Color:Four Elections Dimension:20.5×7.5mm/0.81×0.3in Component:Aluminum alloys Package Includes: 1pc transmission shafts fixing screw note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.