Hign-concerned Chemical:NONEMaterial:Aluminum alloyUse:Mountain Bikes,Road BicyclesType:OtherClamp Diameter:10cmWidth:300 - 400mmOrigin:Mainland China10//20/30cm Bicycle Handlebar Extended Bracket Bike Headlight Mount Bar Computer Holder Lamp Support Rack Alloy Stand Product Description: Size : diameter10/20/30cm Material: Aluminum alloy Pattern : Solid Color 3 colors Package : One piece Features: As extended support to mount lamp, horn, speedometer, sound box etc.Extended Tube 10cm /20cm/30cm optional. For more carryings on the mount, keeping a neat handlebar; Meets most of handlebar sizes; Fasten with bolt, firm and safe mount on handle bar; Light weight, easy to mount and release. About color As youl know, the different computers display colors differently, the color of the actual item may vary slightly from the following images. About size: 1. Please check the size chart carefully before you buy the item, if you don't know how to choose size, please contact our customer service 2. Please allow 2-3cm differences due to manual measurement. (1cm=0.39inch, 1 inch=2.54cm)