Specification BikeType : Mountain Bike Brand : X AUTOHAUX BulletPoint1 : Size: 28.6mm to 31.8mm. Inner Diameter: 28.6mm / 1.13", Outer Diameter: 31.8mm / 1.25", Length: 60mm / 2.36" BulletPoint2 : Material: Made of aluminum alloy, anti slip, anti rust, durable in use. Color: Black BulletPoint3 : Installation: Easy to install and remove, no drilling or cutting required, no tools are needed, just a few seconds to install directly to the bicycle. BulletPoint4 : Application: This product is suited for most bicycles such as MTB bikes, mountain bikes, road bikes, etc. BulletPoint5 : Please check the outer diameter of your bicycle seat tube before placing the order. Measure the inner diameter of the old clamp or the outside diameter of the seat tube. Then make the right choice. BulletPoint6 : Warranty: We are confident in the product quality. And if there are any questions, you can contact us first on Amazon, and We will serve you and satisfy you. Color : Black ExternallyAssignedProductIdentifier : 4712931172423 ExternallyAssignedProductIdentifier1 : 875850000858 ExternallyAssignedProductIdentifier2 : 0875850000858 ExternallyAssignedProductIdentifier3 : 00875850000858 GpsrSafetyAttestation : 1 Hazmat1 : LITHIUM ION BATTERIES PACKED WITH EQUIPMENT Hazmat10 : DE_SmallLithiumIonBatteryWithEquipment Hazmat11 : EG_SmallLithiumIonBatteryWithEquipment Hazmat12 : ES_SmallLithiumIonBatteryWithEquipment Hazmat13 : FR_SmallLithiumIonBatteryWithEquipment Hazmat14 : GB_SmallLithiumIonBatteryWithEquipment Hazmat15 : IE_SmallLithiumIonBatteryWithEquipment Hazmat16 : IN_SmallLithiumIonBatteryWithEquipment Hazmat17 : IT_SmallLithiumIonBatteryWithEquipment Hazmat18 : JP_SmallLithiumIonBatteryWithEquipment Hazmat19 : MX_SmallLithiumIonBatteryWithEquipment Hazmat2 : UN3481 Hazmat20 : NL_SmallLithiumIonBatteryWithEquipment Hazmat21 : PL_SmallLithiumIonBatteryWithEquipment Hazmat22 : SA_SmallLithiumIonBatteryWithEquipment Hazmat23 : SE_SmallLithiumIonBatteryWithEquipment Hazmat24 : SG_SmallLithiumIonBatteryWithEquipment Hazmat25 : TR_SmallLithiumIonBatteryWithEquipment Hazmat26 : US_SmallLithiumIonBatteryWithEquipment Hazmat27 : ZA_SmallLithiumIonBatteryWithEquipment Hazmat28 : 9 Hazmat3 : II Hazmat4 : AE_SmallLithiumIonBatteryWithEquipment Hazmat5 : AU_SmallLithiumIonBatteryWithEquipment Hazmat6 : BE_SmallLithiumIonBatteryWithEquipment Hazmat7 : BR_SmallLithiumIonBatteryWithEquipment Hazmat8 : CA_SmallLithiumIonBatteryWithEquipment Hazmat9 : CN_SmallLithiumIonBatteryWithEquipment ImportDesignation : Imported IncludedComponents : NO ItemDisplayDimensions_Diameter : 31.6 millimeters ItemDisplayDimensions_Height : 10 centimeters ItemDisplayDimensions_Length : 10 centimeters ItemDisplayDimensions_Width : 10 centimeters ItemName : X AUTOHAUX 2 Pcs 28.6mm to 31.8mm Bicycle Bike Seat Post Tube Adapter Seatpost Reducing Sleeve Adapter Aluminium Alloy Black ItemPackageDimensions_Height : 1.38 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 2 ItemShape : Setback ItemTypeKeyword : bike-seat-posts-and-parts Manufacturer : X AUTOHAUX Material : Aluminum ModelName : Dia 31.6mm ModelNumber : SSP-31.6 NumberOfItems : 1 PackageLevel : unit PartNumber : a23052700ux0341 ProductDescription : Feature: Bicycle Seat Post Adapter is made of aluminum alloy material, which is durable in use. Stylish appearance, portable, not rust easily, transforms your vehicle's plain interior and adds a unique of color. Easy to install and remove, no drilling or cutting required, just install directly to the bicycle.