Adjustable Width for rear axles 135 mm to 148 mm with spacers of varying thicknesses for effortless and precise width adjustment, ensuring a seamless biketrainer match Easy Install: your bike's existing thruaxle with this adapter to add a stylish look and enhance wear resistance; ready for indoor training with no special tools or expertise required Durability Assured: made from resilient alloy material, the cycle trainer skewer is wearresistant and sturdy, designed to avoid deformation or rust for longlasting use Enhanced Compatibility Options: supports rear axles from 135 mm to 148 mm width, with three thread pitch choices P1.0, P1.5, P1.75 for seamless biketrainer integration across a diverse range of cycle models Use scenarios: Set up for indoor trainer sessions with bikes of different rearaxle widths Quick swaps between multiple bikes in a home gym or workshop Fast, tool installation for rental fleets or bike shops requiring versatile compatibility