ITEM NAME:Muqzi Mountain Road Bicycle Barrel Shaft Hub Conversion Axis A1F9 Muqzi Mountain Road Bicycle Barrel Shaft Hub Conversion Axis A1F9 Made of 7075 aluminum alloy material,light weight and high strength. It is possible to convert the barrel shaft hub to a quick release. Full CNC machining with high precision. Surface anodizing treatment,it is not easy to fade. color:red Material:aluminum alloy Size:total length 112mm Package Contents: 1 * Conversion axis 4 * spare apron