- Easily adjustable width: Includes a range of thickness spacers for precise width tuning, ensuring a perfect bike-trainer thru-axle skewer fit every time. - Easy installation: Swap your bike's thru-axle with this adapter quickly and without special tools; improves durability and yields a sleeker look for indoor training. - Strength in every ride: Made from high-quality alloy for robust durability; wear-resistant with no deformation or rust for lasting performance. - Seamless indoor training setup: Three thread pitch options available — P1.0, P1.5, P1.75 — designed to fit rear axles from 135 mm to 148 mm, enabling wide compatibility and easy integration with various bike models and trainers. Use scenarios - You ride multiple bikes on a single trainer: switch quickly between bikes with different rear-axle widths using the adjustable spacers to achieve a secure, accurate fit. - You own a trainer used by different riders: rely on the durable alloy skewer adapter to maintain a clean, stable appearance and dependable performance across sessions. - You travel with bikes and need compatibility across trainers: carry the adapter to accommodate various thread pitches (P1.0, P1.5, P1.75) and axle widths (135–148 mm) for versatile indoor training.