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Specification
Brand : BBB
BulletPoint1 : Extension parts for elevating both the ahead and thread handles
BulletPoint2 : Extend the steer tube without affecting the ahead system
BulletPoint3 : Fits both threaded and unthreaded steer tubes
BulletPoint4 : Sandblasted Black B B Round Head Included
BulletPoint5 : Total length of upper shim is 85mm (20mm x 2, 10mm x 3, 5mm x 3) Lower insertion depth 100mm Color: Silver/Black; Body Material: Aluminum; Outer Diameter: 1.1 x Inner Diameter: 1.0 inches (28.6 x 25.4 mm); Reference Weight: 7.8 oz (221 g)
Color : silver/black
ExternallyAssignedProductIdentifier : 4580366298816
ExternallyAssignedProductIdentifier1 : 757686204238
ExternallyAssignedProductIdentifier2 : 0757686204238
ExternallyAssignedProductIdentifier3 : 4524667936824
ItemDisplayDimensions_Height : 0.13 inches
ItemDisplayDimensions_Length : 1.25 inches
ItemDisplayDimensions_Width : 1.25 inches
ItemDisplayWeight : 0.01 pounds
ItemName : BBB Bicycle Lightweight Head Parts Set Extender Adapter BHP-21 Black 28.6/25.4
ItemPackageDimensions_Height : 3.4 centimeters
ItemPackageDimensions_Length : 24.5 centimeters
ItemPackageDimensions_Width : 9.7 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : bike-headset-spacers
Manufacturer : BBB
Material : 金属
ModelNumber : 506016
MountingType : Braze-On Mount
NumberOfItems : 1
PackageLevel : unit
PartNumber : 506016
Pattern : Fits both screw and unthreaded steer tubes
ProductDescription : Feature:
Aluminum alloy headset top bike fork expander bung for 1 inch(24.5mm) or 1.25 inch(28.6mm). Replaces conventional star nut and top cap, a must for bike steerers. Can be used repeatedly, bite tight, does not hurt the fork, a must-have for top-grade bicycles. Eliminating the risk of damage and providing added support to the fragile top of the steerer. Just use the hexagon wrench and then you'll get it installed in minutes. 

Specification:
Material: Aluminum Alloy
Color: Black, Red, Blue, Golden (Optional)
Size: Approx. 5 * 3.2 cm / 1.96 * 1.25 in
Weight: Approx. 50-55g

Package List:
1 * Bike Stem Headset
Core Expansion Range: Approx. 22.2-25.4mm / 0.87-1.00in
ProductSiteLaunchDate : 2015-05-20T21:14:31.907Z
Size : 外径28.6mmX内径25.4mm
Style : Headset
SupplierDeclaredDgHzRegulation : not_applicable
UnitCount : 1
UnspscCode : 25170000
Voltage : 100 volts