Features: Universals bike hub nut deliver seamlessly compatibility with most fixed gear and mountain bikes, features simple installation for instants threads bicycles component assembly. Precisions engineered from corrosions resistant black alloys, these durability bicycles hardware nut withstands harsh weather while maintaining structural integrity through intense cycling. Ideal for competitive cyclists and casual cyclists requiring reliability threads fasteners for frequent wheel adjustments during commuting. Perfect for quick hub maintenance during crosses country races, weekends trail repairs, or routine bicycles tune up in wet/dry conditions. Optimizes hexagonal grip ensures secure hand tightening without slippage, creating vibration resistant connection for smooth pedaling efficiency across varied terrains. Specifications: Color:Five Elections Dimension:1.5×0.82cm/0.59×0.32in Component:aluminium alloys Package Includes: 2pcs Flying Mountain Bike Drum Nut 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.