I have the 15mm set. They are pretty short so storing is not an issue. I strap them on my bahco soldering kit bag. They are so easy to use as it retains a decent length of 15mm in the first section of the bender whilst you hook the second part. No messing about trying to hook the former in. It creates a nice bend and so quickly. For just pulling short 90s or offsets, not fighting with the weight and size of the arms of a traditional bender, this thing is way better. You can also get extension handles that are 1/2inch thread which somebody pointed out the other day can be used as handles to carry around the big rads. You don't need the handles for 15mm, its pretty easy. I have found myself pulling bends more often on small jobs rather than using fittings and soldering as its now more convenient than previous, when i couldn't be bothered to go and get my benders from the van. I still have to have traditional benders for 22 but i should just get the 22 set also really. Id suggest for you to pull the trigger and get a set as they are brilliant.