1. quality material: The press tool for bicycle headset is made of aluminum alloy and stainless steel, rustresistant, strength, and durable. 2. Unique DesignThe bicycle pressin tool features a fully aluminum alloy handle, a removable handle design, strength aluminum alloy connections, aluminum alloy knurled handles, and a surface anodizing treatment, ensuring strength and nonslip functionality. The block design for mounting thrust bearings prevents damage to the bearings during installation. 3. Method of use: Hold the bottom bracket tool with both hands and slowly apply pressure to install it. Pay attention to whether the axle is crooked, proceed gradually, and avoid damaging the bearings. It is recommended to install only one side at a time. 4. Wide ApplicationThe bottom bracket bike tool has tight and precise thread pitch, strength, and is suitable for different BB axle formats. Please check whether your bike is compatible with our product before .