the Lord of Tools 20 Teeth Bike Freewheel Single Speed Bicycle Metal Sprocket Inner Diameter 34mm Outer 85mm Accessory

[Premium Iron Construction] Corrosion-resistant, durable material ensures prolonged performance, providing a reliable gear solution for extended cycling endeavors. [Precision Threaded Hub Connection] High-precision threading guarantees a snug fit with bike hubs, ensuring smooth rotation and enhanced stability during rides. [20T Gear Size] With a 20-tooth count, inner diameter of 34mm, and outer diameter of 85mm, it optimizes cycling efficiency, ensuring smooth gear transitions. [Enhanced Frame Functionality] Unique groove pattern aligns flush with the flywheel, enhancing the bike's framework performance for a seamless riding experience. [Chain Compatibility & Versatility] Compatible with 1/2" x 1/8" chains, suitable for mountain and road bikes, offering versatility for various cycling terrains and preferences.