Must-buy if you have recently bought a clarinet
I made a total mistake not to get one of these the first day I bought my clarinet. If you have newly picked up the clarinet, be sure to add a bunch of these (or preferably few of these and few others with different strengths) to your cart. I immediately broke a reed on the second day of playing my clarinet.
These reeds are for me, a complete beginner, totally great. I have not noticed any hardship with them, and they are very durable (in terms of 'reeds' that is). They come at a great price too!
My recommendation is simple; get many of these, in addition to other ones with higher strengths. You are definitely going to need them if you are a beginner, and for a beginner nothing can go wrong with these.