The DT Swiss QR End Cap Conversion Kit allows you to convert your DT Swiss 350 or 240 center lock disc brake hubs to fit different axle standards, including 5mm quick release (QR), 12mm, or 15mm thru-axles. This conversion kit is designed specifically for disc brake-equipped hubs, offering compatibility and flexibility for riders who want to switch between different axle types without changing the hub. It is important to note that the DT240 EXP and DT180 EXP conversion kits are hub-specific, meaning they are not backwards compatible with older versions and are only available for 5mm QR. This kit is an ideal solution for riders who need to adapt their hubs for different setups, ensuring smooth performance and easy installation for various axle standards.