Bicycle Tools features: Muqzi mtb road s bike fork extension adapter conversion hanging core riser handlebar raiser bicycle parts(20.8mm) Color: we send based on the color or size of the main image of the product page. Quantity：we send based on quantity on title, if there is no quantity in the title, we send based on description. Colour:20.8mm Mainly Used To Install Your Favorite Stem After Modification. This Lifting Core Can Be Directly Installed With a 4Cm High Stem. If The Height Of The Stem Is Less Than This Height, Please Remember To Install The Washer Before Installing. The Design Has Been Strengthened Here, And The Old 2mm Has Now Been Changed To 3mm. This Product Is Professionally Used For Children's Bicycles, Adult Bicycles Can Also Be Used, But Not For Extreme Sports (Such As Jumping, Rushing, Climbing) Specification: 20.8mm / 22.2mm Net Weight: 110g Type: Spring Fork (Low Gear Non-damping) Model Number: Bike Fork Extend Adapter Fit For: Disc Brake colour:Black Material:Aluminum alloy size:99 x 38 x 28.6mm In Parcel: 1 x Bike Fork Stem Riser Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.