The Ergotec Up & Down Turn 3 Adapter Is A Handlebar-Height Adjusting System For Ahead Stems With An Additional Rotation Function. By Means Of A Quick Clamping And Release Mechanism All Functions – Raising, Lowering, Rotating – Can Be Implemented With Ease And Without Tools. During Fitting The Steer Tube Does Not Need To Be Milled, Which Has The Advantage That The Adapter Can Be Removed Again At Any Time.Specifications:- Material: Al 6061 T6- Fork Clamp: 28,6 Mm - Quill Length: 53 - 153 Mm- Clamp Height: 35 Mm - Finish: Black Sandblasted- Weight: ~346 G