I use this in my track bag for my track bike. It fits in a pocket within my track bag, and keeps everything together nicely and organized. The design is so nice (especially the bag) that I actually enjoy using the tools. I'm usually a sloppy person with tools, but this bag inspires me to put everything away neatly. I get a weird little pulse of pleasure doing so. Much easier to use than my tri-wrench in many circumstances. Plus-has some sizes I need not on my tri-wrench. I've had to disassemble and reassemble my bike for travel, and this is very useful for my seatpoast, seat, handlebars, etc. It has proven indispensable, as well as getting some admiring glances. I still use my park tools tri-wrench when changing chainrings.