Profile Design Boa Quill Stems are constructed of 6061-T6 Aluminum.
- For 1" threaded headsets: 12mm range from minimum insertion to max insertion; 73mm from minimum insertion to top of quill
- Quill insertion diameter: 22.2mm for 1" Quill stems
Bar Diameter: 25.4mm
Steerer Diameter: 1" Threaded
Quill Insertion Diameter: 22.2mm
Stem Angle: 20° or 40°