Features1This 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.SpecificationFeatures: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: and High QualityMaterial: Aluminum Alloy + Nylon PlasticColor: Black, Blue, Red, Gold (optional)Suitable for Bottom Bracket Shell is 68-73mm/2.6-2.8''High Precision Sealing Bearing InsideApplicable:If Only the diameter of the cylinder in hollow crankset is about 24mm.Package Weight: Approx. 130gPacking List:1 x Thread Crankset BearingNOTE:The middle tube color of this product will be sent randomly in transparent or black.Package List