Title: Greenfield bicycle kickstand damages frame
Review: This seems to be a well-made and sturdy product, but it is not for use on aluminum or carbon frames. The clamping pressure and the small protrusions on the clamping surface will dent aluminum and damage the paint. Both happened to my bike. Damage to carbon seems even more likely. A steel frame might escape damage from clamping, but it seems likely that the paint would still be damaged.
Is this product review negative?