If you order the "Light" in any of the titles it only works with the K-force Light cranks. FSA makes another version of this that does NOT have light in the title, & those you can use with other cranks. I just found this out the hard way. Nice product though!
I usually bike 200-300 miles a week on the road & have had NO issue at all with bottles trying to fly out of the cages. I have regular bottles as well as the Polar 24 ounce bottles & all of them stay tight & secure! Extremely easy to get the bottles out & right back in! I LOVE THEM & RECOMMEND THEM TO EVERYONE!