Adjustable Width: Adapts to different rear axle widths with spacers of varying thicknesses for precise, effortless width adjustment, ensuring a seamless biketrainer match. Easy Installation: Swap your bike's thruaxle with this adapter to gain wear resistance and a sleek appearance, enabling a quick start to your indoor training. Reliable Construction: Made of tough alloy material, this cycle trainer skewer is sturdy, wear resistant, and designed to last without deformation or rust. Broad Compatibility and Easy Setup: Available in three thread pitch options P1.0, P1.5, and P1.75, designed to fit rear axles from 135mm to 148mm, ensuring wide compatibility with various bike models and trainers. Use Scenarios: Scenario 1: You have a road bike with 142mm spacing and a trainer that supports a thruaxle adapter; use the appropriate spacer to achieve a snug fit. Scenario 2: You manage multiple bikes (135–148 mm) and want quick indoor training across models; swap the thruaxle and spacers to match each bike. Scenario 3: You upgrade to a trainer that requires a different thread pitch; select P1.0, P1.5, or P1.75 to secure proper engagement.