Great quality and great sound! One can play it attached to the drums, as cow bells, or with the hands, as an agogo. The tuning seems to be G4 - Bb4 - Eb5 (I guess... it is hard to get it right with the tuner). Anyhow, the intervals are not dissonant. They combine harmoniously. I take out one star for three reasons:
1. It is very expensive (75 EUR) even for its quality.
2. It is pretty big, and therefore difficult to fit in the drums.
3. The smallest bell does not sound as good as the two bigger ones. It might have something to do with the fact that the two bigger ones are oval and the smallest one is square. It has a much smaller sound and less definite, with higher harmonics dominating, while the other two bells sound very loud and clear. Thus, there is room for improvement. Anyhow, it is a good set of bells, if you don't mind the price.