I got this Bottle KlicKfit from SJSCycles and came first class postage.
I would say the hardest part is figuring out where you want to have your bottle cage as I have seen a few people put it on the handle stem like me or on the main tube.
(Tip: Get a piece of old inner tube to wrap around your bike's mounting point so you don't scratch the paintwork)
|Base of KlicKfit on Stem with some old rubber innertube
Its attached with the long silver piece of metal and comes in 2 different lengths so should be able to be used on any diameter tubing.
(Tip: use abit of old inner tube to protect your paint work and stop it moving about while riding)
The second part is the part that attaches to your chosen bottle cage
|Bottle Cage holder
|KlicKfit cage holder with Bottle cage attached
When in actually use I find its easier to unclip the whole cage thing even while riding as this cage is pretty grabby and sometimes you will be fighting to get the bottle from the cage to take a drink. It could be just the cage I got to hold the bottle itself but its so easy to clip and unclip while riding. Not once did it un clip itself and didn't get in the way of my knees while riding along or folding.
So if your gonna be doing alot of riding esp in summer/hot weather and don't want to stop for a drink I can heartily recommend this piece of kit. Thanks to another member of the London Brompton Club that put me on this KlickKit system. Also can get other attachments to for holding maps, mobile phones & bags.
|KlicKFit fully installed with waterbottle