Easily Adjustable and Reliable BikeTrainer Thru Axle Skewer Adapter Easy width adjustment: Includes a variety of thickness spacers for precise width control, ensuring a biketrainer thru axle skewer fit every time. Simple installation: Upgrade your bike by replacing the existing thruaxle with this adapter. Provides enhanced durability, a sleek appearance, and straightforward indoor training initiation. Durable and corrosion resistant: Made from alloy material, the skewer resists wear and rust, delivering longlasting durability and sturdiness. Wide compatibility and adaptability: Three thread pitch options P1.0, P1.5, P1.75 and suitable for 135148 mm rear axles. Enables seamless biketrainer connection across a broad range of bike models. Use scenarios Indoor training with road, gravel, or hybrid bikes: When your frame spacing falls within 135148 mm, install this adapter with spacers for a snug, secure trainer connection and stable performance during workouts. Quick transitions between bikes: If you ride multiple bicycles with different rearaxle specs, select the appropriate thread pitch (P1.0, P1.5 or P1.75) and adjust the width with spacers to switch bikes efficiently without multiple skewers. Frequent trainer sessions with durability needs: Regular indoor training benefits from the alloy construction that resists wear and rust, maintaining reliable performance over time.