This is the classic Sögreni bell. It comes with fittings, and is very easily mounted. Please note, that your head tube should be between 26 and 28 mm.
The brass is the clearest sounding bell, the zinc is the most muted. The steel gives the most authentic sound and the copper is the deepest sounding bell. The bell comes in a nice wooden box with the Sögreni logo printed on it - perfect if you buy the bell as a gift for someone. From left to right on the big picture: Brass, Steel, Copper, Zinc.