Specification:Material: stainless steel/rubberHammer length: 26cmHammer weight: 300gLength: 310mmTop diameter: 25.5 mmScope of application: 33-56mm bicycle headset cup and BB bottom bracketType: bottom toolAxle pressing tool set for bicycle headsetFeature:1. Double-sided plane thrust bearing, installation labor saving. During installation, hold the handle with both hands and apply pressure slowly. Please pay attention to observe whether the earphone or bottom bracket is tilted and matched with the matching wrench or adjustable wrench. It is recommended that you install only one side at a time2. Aluminum alloy knurled handle, double-sided plane thrust bearing3. Aluminum alloy upper/lower pressing block. New aluminum alloy material, CNC fine turning electroplating treatment, surface anodizing4. Pressure block design, the back is used to assemble the press-in bottom bracket, the design of the sinking table avoids crushing the bearing during the installation process5. Time-saving and labor-saving, the bearing adopts lubricating ball, labor-saving operation, not easy to squeeze.