Peg -2pcs Bicycle Front Hub Front Tube Shaft Conversion Saddle Adapter 15mm to 12mm Red Highlights Generic Brand 2pcs Bicycle Front Hub Front Tube Shaft Conversion Saddle Adapter 15mm to 12mm Description: HMX 15MM cylinder shaft conversion to 12MM mini barrel shaft, universal conversion seat Aluminum alloy, light weight and high strength Can be used with common road disc brake hub 100*12MM , which can be supported in the market. It avoids the need to replace the hub when upgrading the front fork, which is a significant saving for bicycle enthusiasts. 3-way sealing ring design at the conversion seat, the hub is higher precision and stronger stability after installation specification: Material: aluminum alloy Size: approx. 30 x 15mm / 1.18 x 0.6inch Package includes: 2pcs Cylinder Shaft Conversion Seat Adapter (with 6pcs gaskets) Note: Due to the differences between different monitors, the image may not reflect actual color. There is 2-3% difference according to manual measurement, please check the size carefully before you buy the item. THANKS!