Description: Made of aluminum alloy & plastic, this bottom bracket is solid and durable with long service time. The separate rubber gasket with bilateral sliding characteristic, won't inrease the resistance to roration axis This accssory is applicable for Shimano Crankset, Prowheel, FSA Integrative Crankset, Sunrace, whose diameter of the cylinder is about 24mm. Inside spring ensures water and dust resistance. High precision sealing bearing. Bicycle Frame: For 86mm-92mm/3.39-3.62 inch Frame Shell. Specification: Material: Aluminum Alloy + Plastic Length： 95mm/3.74 inch Package Includes: 1 Piece Bearing Bottom Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3mm differences due to manual measurement. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.