- Guaranteed longevity: Designed for prolonged use cycles, the trainer axle preserves original mechanical characteristics without sagging thanks to a durable alloy composition and precise workmanship. - Quick installation: Swap your existing through axle with this adapter for optimized durability and refined appearance; get ready for indoor training in seconds, no tools required. - Ideal for Him: For father, boyfriend, uncle or , this bike trainer pin is the perfect expression of care during birthdays, parties and holidays. Practical accessory for indoor cycling. - Flexible connection: Thanks to P1.0/P1.5/P1.75 threads and axle support 135-148mm, easily connect your bike to any indoor roller for versatile training sessions. Use scenarios - Home indoor training: Quickly convert your bike for use with an indoor trainer, achieving a stable, durable setup in seconds without tools, and maintain consistent mechanical characteristics during workouts. - Cross-bike compatibility: Use with multiple bikes that have 135-148 mm spacing and P1.0/P1.5/P1.75 thread options to connect to various indoor rollers for versatile training sessions. - Gift or shared use: A practical, thoughtful accessory for cyclists and bike enthusiasts, suitable as a birthday, holiday, or special-occasion gift.