What this part does and why you need it Robust 36hole rear wheel hub that rebuilds or upgrades your wheel for reliable daily riding and weekend cycling. Replaces worn or damaged rear hubs, restores proper wheel tension and alignment, and supports consistent rotation with low friction. Key features and benefits 36spoke holes: Precise wheel lacing and balanced spoke tension for a true, durable wheel build. 175 mm rear axle length: Standard screwend/nutted axle design fits freewheel systems and frames that require a 175 mm total length, simplifying installation and replacement. Iron/steel construction (380 g): Heavyduty material for improved strength and stability under load. Smooth silver finish and refined surface treatment: Resists wear and corrosion from urban commuting or outdoor exposure, extending service life. Lowfriction rotation: Engineered for consistent performance to improve ride quality and reliability. Compatibility Designed for rear disc wheels and compatible with most road bikes, fixedgear bikes, and olderstyle frames that accept a 175 mm nutted axle and freewheel systems. Suitable as a direct replacement hub for rebuilding wheels or converting/repairing classic and fixedgear bicycles. Practical specifications Spoke holes: 36 Axle/overall length: 175 mm (nutted screwend) Material: Iron/steel Weight: 380 g Finish: Silver, treated for wear resistance Typical use scenarios Commuter : a seized or damaged rear hub to get a daily rider back on the road quickly and reliably. DIY wheel building: Use as the core component for custom 36spoke wheel builds for road or fixedgear bikes. Restoration projects: Fit older or vintage frames that require a nutted 175 mm axle and freewheel setup to restore original function. Why choose this hub Straightforward fit and installation for frames using freewheel/nutted axles, reducing time and tools required for repairs. Durable steel construction and protective finish make it a practical, longlasting choice for urban and recreational cycling. Designed for accurate spoke tensioning and stable rotation, helping wheels stay true and perform reliably over time.