The Birzman is a good tool kit for the price. This kit includes all the tools that are absolutely necessary for the most basic bike maintenance, namely, tire levers, chain-wear indicator, chain-breaking tool, hex wrenches, and spoke wrenches, plus a few extra for more advanced operations. The tools are made of high quality steal, which will last a good few years. The best thing about this kit is that it excludes the more specialized instruments, which the average bike enthusiast wouldn't need on a daily basis, thus saving you money.
Pro Everything you need in a tool kit
The Birzman covers the absolute basics well by including tire levers, chain-wear indicator, chain-breaking tool, hex wrenches, and spoke wrenches It also carries some more advanced tools for when you're ready to step up your maintenance game, for example a pedal wrench, cable cutters, chain whip or cog wrench, and cassette removal tools. What makes this tool kit great is the inclusion of a chain-wear gauge, which most tool kits around this price do not have. Having a chain-wear gauge can prevent costly repairs by detecting a worn chain before it damages your chainrings and casette.
Pro Good quality tools will last for years
The tools int the Birzman are made of high quality metal, and will not bend or chip easily. The handles are made of easy-to-grip rubber for comfortable use. The best quality tools are those that you'd buy separately one by one, but out of all the premade kits for under $300, the Birzman is a few levels above in terms of quality and durability.
Con A few tools could be better
The cable cutters feel a bit light in your hand, and they don't have integrated crimpers (to keep a cut cable from unravelling). On the other hand-most kits don't include cable cutters at all.
The pedal wrench is flat, without an offset head to keep your hand away from the chainring teeth.