The outdoor biking season for me is over at this time. I bot the cygolite mount to attach to a Garmin-bike-computer handlebar mount. This cygolite light-mount will work fine, it's sturdy. The problem is that once the headlight has been inserted, on the mount it's hard to take off. I even put some oil on it to assist removal - that helped. That said, it's not going to come loose on a bumpy road. 3 stars = ok. Without consideration of the tightness issue, it's 5 stars.
Worked perfectly and does not slip! I has ridden many miles with it now. No issues. While friends have same style part and they all slip. This one id great.