- Adjustable width for a precise bike-trainer fit: supports rear axle spacings from 135 mm to 148 mm using spacers of varying thickness for effortless and accurate width adjustment, ensuring a seamless match between bike and trainer. - Easy installation: swap your bike's thru-axle with this adapter for improved wear resistance and a sleek look, enabling a quick start to your indoor training. - Reliable and durable: made from tough alloy material, the cycle trainer skewer is sturdy, resistant to wear, and designed to last without deformation or rust. - Optimized indoor cycling setup: designed with three thread pitch options P1.0, P1.5, P1.75 to accommodate rear axles from 135 mm to 148 mm, streamlining compatibility with different bike models and trainers for easy integration. - Use scenarios: - You upgrade to a trainer that requires a different axle width; use the spacers to dial in the exact 135–148 mm width for a secure fit. - You rotate between bikes with varying rear-axle spacings (135–148 mm); this adapter covers all widths without needing multiple skewers. - You want a wear-resistant, cleaner-looking setup for regular indoor sessions while preserving compatibility with your existing thru-axle.