Feature 1This product adopts special technology, good quality with a long life span. 2Separate rubber gasket, spring inside, prevent water and dust, super waterproof. 3Smooth rotation, easy installation and operation. Applicable for Integrative crankset, if Only the diameter of the cylinder in hollow crankset is about 24mm. 4Qualified aluminum alloy material, solid and durable 5Great accessory for cycling enthusiasts.Specification Features: This product adopts special technology, good quality with a long life span. Separate rubber gasket, spring inside, prevent water and dust, super waterproof. Smooth rotation, easy installation and operation. Applicable for Integrative crankset, if Only the diameter of the cylinder in hollow crankset is about 24mm. Qualified aluminum alloy material, solid and durable. Great accessory for cycling enthusiasts. Specifications: Conditions: 100% Brand New and High Quality Material: Aluminum Alloy + Nylon Plastic Color: Black, Blue, Red, Gold (optional) Suitable for Bottom Bracket Shell is 68-73mm/2.6-2.8'' High Precision Sealing Bearing Inside Applicable:If Only the diameter of the cylinder in hollow crankset is about 24mm. Package Weight: Approx. 130g Packing List: 1 x Thread Crankset Bearing NOTE:The middle tube color of this product will be sent randomly in transparent or black. .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }