Some forks only have single bottle cages. This adapter changes that and give you 2 spots from one on your fork.
It can also be used on the down tube, to create a double cage system to clear you frame bag.
Big or Small cages, 2 hole or 3 hole, we got you covered.
bolt on or strap on stuff...no probs, lots of holes for straps to fit.
AU$25ea for the SHORT< AU$35 for the LONG