"Will the clicking flanks break?"
All the split tippers are produced to the best of my knowledge and belief and are tested thoroughly. I spent a lot of thought on selecting the materials before I decided those final designs were ready for serial production. Nevertheless, the tippers will not have an indefinite lifetime. The lifetime depends on how the tipper is treated. So here are a few pointers:
Both the N-EF 1 and the N-EF 2 come with a protection sleeve, which is supposed to make the flanks nearly impossible to break. However, I have seen "impossible" things happen before, so I ask you to think of the tippers as delicate musical instruments, and to play, transport and store them with the necessary respect and care.
All these tippers come with wonderful skills and sound capabilities. Those are only possible because the tippers have a certain amount of flexibility and hence fragility. For that reason, I cannot provide a lifetime guarantee. Please remember that, for example, guitar strings or the hair of a fiddle bow do not have an indefinite lifetime either, and need to be replaced from time to time. Nevertheless, I guarantee that the wonderful qualities of those tippers will make them indispensable to creative bodhrán playing.
And now: Have fun with these exciting special tippers!