In this kit, you have every necessary tools you need to repair/maintain or replace parts of your bike.
I was able to disconnect a chain link, remove the cassette from the rear hub, remove the crankset and bottom bracket from the frame and also both front and rear derailleur.
On a bicycle, you can do a lot of things with a simple Allen key set. But with this kit, you can basically take every parts off from the frame of the bike which you can't do with just Allen keys. (Obviously, there is a Allen key set in the kit.)
Every tool is strong and durable. They will last you a really long time.
I'm really happy with this purchase and I would highly recommend it to anyone who is looking to upgrade/replace their bike parts.
I bought it at a Canadian Tire for 110 CAD$ and it's worth every penny!