Easy installation: Replace the bike's rear skewer up to the axle with this adapter for improved wear resistance and a clean, elegant appearance. Effortlessly complete your indoor training routine. Reliability confirmed: Made of hard alloy, this trainer adapter is sturdy and resistant to wear and tear, designed to stay deformation- and rust-free over time. Flexible integration: Three thread pitch options—P1.0, P1.5, and P1.75. Compatible with rear axles 135-148 mm wide, and fits 135-148 mm spacing. Easy to connect with your bike and any indoor trainer for versatile training setups. Gift idea: A thoughtful upgrade to the skewer that makes a practical gift for birthdays, holidays, Christmas, or year-end celebrations. Use scenarios: - You have multiple bikes with 135-148 mm rear spacing and want to train them with a single indoor trainer. - You want to reduce wear on your original skewers and maintain a neat, clean trainer setup during frequent sessions. - You need a useful, practical gift for a cyclist friend or family member.