From the manufacturer

Upgrade your adventure with the TWIST Universal Connector + Bike Base. By combining the TWIST magnetic system you love with the Boa® Fit System, any bottle turns into a Fidlock bottle. Use this system to carry your hydration, energy bars, or even your speaker for some tunes on the trail.

Includes TWIST Bike Base and screws for mounting to standard braze-ons. Make sure to use the provided screws when attaching your bike base.

Features

• Compatible with all TWIST bases
• Can hold items with a diameter of up to 80mm / 3.14in
• Anti-slip inlay for strong hold