Features:_x005F_x000D_1.The aluminum alloy material is used to lighten the weight. The detachable handle design and the handle knurling process ensure strength and anti-slip_x005F_x000D_2.Stainless steel screw: The total length of the screw is about 24.5cm, the diameter is about 12mm, and the thread pitch is tight and fine. High strength, suitable for most head tube lengths_x005F_x000D_3.The reverse side is used to assemble the press-in bottom bracket. The sinking platform is designed to avoid the bearing from being crushed during installation._x005F_x000D_4.The front side respectively corresponds to the inner hole size of the frame head tube or headset, which plays a role of guiding and positioning during assembly, which is not easy to be crooked, and protects the frame and headset._x005F_x000D_5.Plane thrust bearing labor-saving design The bearing adopts lubricated balls, labor-saving operation, not easy to be crooked _x005F_x000D_ _x005F_x000D_Notice:_x005F_x000D_Please allow 1-3cm deviation due to manual measurement_x005F_x000D_Actual color may be slightly different from the image due to different monitor and light effect_x005F_x000D_:_x005F_x000D_Material:Aluminum AlloyStainless Steel_x005F_x000D_Size:as shown_x005F_x000D_ Package List:_x005F_x000D_1 set x Press Installation Tool