【Complete Repair Kit Solution】Mountain bike hollow hub shaft rear axle kit - converts standard axles to quick-release systems (not applicable to single wheel and bearings) for emergency trailside repairs.
【Exquisite Technology】Machined threads ensure perfect force distribution - black bike axle is smooth burr-free surface prevents slippage while maintaining lightweight durability for competitive cycling.
【Universal Multi-Speed Compatibility】3/8" black 26 TPI hub conical lock nut kit fits most mountain, training, and variable-speed bikes - ideal replacement for bent/broken axles with straightforward installation using basic bicycle tools.
【Endurance-Rider Optimized】bicycle axles rear axle can reduce rotational mass minimizes training fatigue - corrosion-resistant construction delivers thousands of miles of reliable service across wet/dry conditions.