Review on Topeak F66 Fixer: Versatile Solution for 📱 Phone Pack, Tool Bags & Moonshine 3H/HID Battery Mount by David Hill

Ordered this F66 holder to avoid problems with loose fitting and sloppy phone case. I figured this would allow me to more securely attach the bag to the stem bolt. Great idea, but two things: 1) it's not required; The handlebar mount that comes with the bag is very tight and secure, and 2) the screw that comes with the F66 mount is very short. It didn't fit my Cannondale and I couldn't use it.