I actually own another stand, but my brother-in-law has this one. Mine is also a portable stand that has tripod legs. However mine has the traditional clamp that you would clamp on a seat post. When we built my wife's cervelo slc sl, it has an aero seat post which forced me to clamp onto the carbon frame. I was nervous that I was going to put too much pressure on the frame and have it break. The PRS 20 eliminates that problem by not clamping at all. It just sits on the bottom bracket and clamps in on the front fork. No worrying about crushing carbon. Genius.
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