Are you looking for a professional, yet ? Are you in search of a sturdy, trustworthy tool that can do multiple works at once? , ! Our professional must meet you needs. It is one of the for you. Features - Color: Silver. - Size: 2.00X2.00X1.10cm/0.79X0.79X0.43 inch. - Material: Stainless steel. - The 130-length hub opening can be extended to 135mm to suit the 135mm opening frame. - Most of the hubs of road bikes are 130mm. If you want to install it on a mountain bike frame with 135mm, you only need to use this conversion seat. There is no need to replace the hub, which saves costs. - During installation, install the conversion seat on the hub and then open the frame with a little force to install it. - Stainless steel is much stronger than aluminum alloy. safer. - Adopts precision production to the stable characteristics and high reliability. Package list: 2 x Rear Hub Converters