This is a very good set of router bits for the beginner or home user. They do not have the quality, strength, or durability of the major (costly or industrial) brands, but they get the job done rather well for some time. If I find I am using a bit again and again, I'll splurge and buy a Whiteside bit to replace the one in this kit. Unfortunately, a single Whiteside bit typically costs two or three times the price of this entire set. Some users complain about the product:
1) The case is cheap and/or arrives broken: Mine arrived in perfect condition and is quite durable. With any reasonable care it should last indefinitely.
2) The bits are very difficult to remove from the case: Instead of being dropped into drilled holes in the wood, the bits are each held in a plastic socket that holds them securely. With a bit of use (or with a bit of lubrication) they remove easily but are still held securely in their socket.
3) The bits are dull, wear out fast, or break: Again, these are not industrial quality bits and need to be treated rather gently. They won't hold up to "hogging out" deep cuts in a single pass (especially in hardwoods), and users need to understand proper feed directions to get smooth cuts. With a bit of experience and careful use, they'll do a very good job for quite some time.
Overall, this set is a great value - attractive price for a very usable assortment of the bits commonly used in woodworking. Would I buy it again? As I said earlier, if I wear out a bit from being often used, I'd replace it with a more costly single bit. If I wear out several bits over time due to infrequent use, I'd buy the set again to refresh my inventory. I'd certainly recommend the set to fellow hobby/home "wood butchers" and I think they'd be happy with the performance.