Make sure you order the right size. In most cases, 60 mm (approx. 2 1/2 inches) is required. 25mm is just a protrusion (about 1 inch). Plus, to install, all you have to do is wrap the brace around the stem and TWIST/SCREW the bracket. Stupidly I figured I would have to clamp the clamp and slide the mount. The bracket has grooves that allow screwing. Just twist until it gets tighter. Very easy. Great design and works very well. No slip. I have a Sigma Sport Rox 5.0 and it works great.
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