Great for cleaning all parts of trombone, easily gets to all parts
Pros:
Easy to use, easy to store inside trombone or beneath the bell. Cheap and efficient. Easy to apply lubrication.
Cons:
The cloth could be longer for cleaning inside the trombone with stick, as it is advised in the manual (like this it can not be used like advised without risk of staying inside slide). The snake has too small "cleaning" part at the end, it could be larger
Altogether, great and cheap option for beginners, but I recommend as I learned, using grease and water combination in spray - bottle for easier and faster application.