Shimano BB-UN300 Bottom Bracket, JIS

Good quality bottom bracket that helps provide the optimal chainline for the Wabi crankset. Shimano's core square tape bottom bracket provides good all-around value and quality. Features a hollow spindle. Fixing bolts not included. In general, we recommend the 107mm as a replacement for current Wabis. 110mm is recommended if you are going to 50T chainrings or larger or you are looking for a standalone option for the Wabi crankset for other frames. Specs: Spindle length: 107 or 110mm Taper type: JIS  Material: Steel Bearing Type: Sealed  Weight: 301g Threading: English Recommended Tools: Square taper crank puller: Park Tool CCP-22 Bottom bracket removal tool: Park Tool BBT-22