Adjustable width with included thickness washers for precise compatibility between your bike and the hometrainer quick coupler. Quick, tool adjustment helps ensure a fit every time.Wide axle compatibility supports rear axles from 135 to 148 mm, enabling a single device to work with a broad range of bike frames.Maximum adaptability has three thread pitch options (P1.0, P1.5, P1.75) to match different trainer interfaces and secure connections across a variety of models.Durable and maintenancefriendly made from a resilient alloy that balances light weight with fatigue resistance for long service life and minimal upkeep.Easy installation and secure connection designed for reliable performance with straightforward setup to keep you training without fuss.Giftready and versatile a thoughtful gift option for birthdays, parties, Christmas or endofyear celebrations, showing appreciation to the cyclist in your life.Practical use scenariosYou own multiple bikes with different rearaxle widths and want a single adapter that covers 135148 mm without swapping parts.You use trainers that require different thread pitches; simply choose P1.0, P1.5 or P1.75 for a secure fit.You value a durable, lowmaintenance connection for regular indoor training, reducing setup time and maintenance.