The BBT-9 fits cups and lockrings with 16 external notches and an outside diameter of approximately 44mm

Simply put

When it comes to hydrating equipment

Fits standard bicycle handlebar

The Black Diamond HotForge Hybrid Quickpack combines smooth clippability with wiregate functionality

Watts 2.0 Bike Helmet Size:Medium The BBT-9 fits cups andBern Watts 2. 0 Bike Helmet The Watts 2. 0 is your jack of all trades adventure helmet, purpose built for all season shredding. Bern took the original Watts helmet, put it on a diet, added more airflow, and dialed it in with a Compass Fit system that makes it easy to get a custom fit in seconds. This lid features that signature Bern brim in a shell thats 20% lighter than the original, providing you with the ultimate balance of style and comfort. Swap