Clean and neat style of a classic Quill stem, but made for modern 11/8" ahead system bikes. The front binder shaft design provides an effective rise equivalent to fitting 30mm of spacers. Does away with unsightly spacer stack and knee bashing clamp bolts.Hollow 3D Forged alloy-15 Degree angle (ground parallel)Steerer insert (stack height) Min 65mm, Max 73mmEasy fit 4-bolt front plate31.8mm clamp