Easy to use adjustment: To accommodate rear axles of different widths this skewer allows precise adjustment and comes with spacers of various thicknesses for a fit with your bike and combination Easy installation: Effortlessly swap your bike with this adapter for enhanced durability and a more stylish appearance, and start indoor training without any special tools Longevity: With its alloy material construction this bike trainer skewer resists wear and rust, delivering long lasting durability and sturdiness Optimized indoor cycling configuration: Designed with three wire pitch options P1.0, P1.5, P1.75 for rear axles from 135mm to 148mm, streamlining compatibility with different bike models and trainers, enabling easy integration Use scenarios Home indoor training with multiple bikes: Quickly switch between road and mountain bikes on a single trainer by adjusting to 135–148 mm and using the spacers as needed Gym or training studio: Allow different riders to use the same trainer by swapping bikes fast and without tools, maintaining secure fit and steady performance Interval or mixedmodel sessions: Rely on the three pitch options to align with various bikes and trainers, reducing setup time and downtime between exercises