Description: Of course, our products can be used for a long time because it has good wear resistance and corrosion resistance, and at the same time has a compact structure. There is no doubt that the screw is a good anti -LUST performance made of 304 stainless steel. And the thickness of the head is only 3mm, which can protect the fork from being scratched. It is made of aluminum alloy and stainless steel. The barrel shaft is 100mm, which is suitable for the open gear conversion of 110 mm opening; the rear wheels are 12mm and the barrel shaft is 142mm. It is suitable for the open gear conversion 148mm open gear. Anti -tolerance, high hard color: black standard: black standard: front enhanced hub adapter, rear hub adapter, rear hub adapter, rear vibration type, hub adaptation detail Thickness: 0.3cm/0.12 (approximately) Note: Due to the differences in light and screen settings, the color of the project may be slightly different from the picture. Please allow minor size differences through different manual measurements. Packaging includes: 1 x Boost Hub Adapter2 X cushion circle 6 x screw