Features:1 The Bottom Bracket Is Solid And Durable2 The Steel Body Can Absorb Roundness Tolerance For Installing Bracket Bottom 3 Integrated System Can Be Able To Protect The Frame Increased Output Power Is Better Than The Normal Central Movement Of The Structure4 Suitable For 68Mm Shell5 Use The Bb Tool To Install And Replace The Middle Bracket For Safetyspecification :Material: Steelsuitable For: 68Mm Framesize: Approx 68 X 11051131161181201225124126 Mmcup Thread Size And Pitch: 348 Mm 137 * 24Tpistructure: 2 Bearings
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