Originally Posted by
REDMASTA
Ha, yeah they look almost as if they were designed for the shape of your tubing. My tubing is round so they may still twist a little, who knows. Using a saddle mounted cage which works OK but would prefer something on the frame.
I've used the TwoFish Quick Cage adapter on a round-tube steel bike with no issues. Well, except for not tightening the strap enough at first, and having it slip down in the rain. Tightening the strap fixed that. The cage can still move around a little because the rubber is flexible, but it's not bad.