HMX 15MM barrel shaft conversion to 12MM mini barrel shaft, universal conversion seat<br> Aluminum alloy material, light weight and high strength<br> Can be used with the common 100*12MM road disc brake hub, which can be supported on the market<br> It avoids the need to replace the hub when upgrading the front fork, which greatly saves money for bicycle enthusiasts<br> 3-way seal ring design to the conversion seat, the hub is higher precision and stronger stability after installed<br> Specification:<br> Material: Aluminum Alloy<br> Size: Approx. 30 x 15 mm / 1.18 x 0.6 inch<br> Package Includes:<br> 2 Pieces Barrel Shaft Conversion Seat Adapter (with 6 seal ring)<br> Note:<br> Due to the differences between different monitors, the picture may not reflect the actual color.<br> There is 2-3% difference according to manual measurement, please check the size carefully before you buy the item. Thanks!<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store