This Gloworm quick release handlebar mount is made of a carbon fiber filled nylon composite. Two sizes, one to fit a 31.8mm bar (most bars at the stem) and one for 35mm bars.
Fits all versions of Gloworm lights.
This mount is solid and stiff. The material provides a firm grip on the bar. We feel confident using it on the CX, X1, X2, XS and the XSV*.

*Compatible with Gloworm Generation 1 lights only