– 45mm diameter brass or aluminum dome with coil spring striker
– "Alloy" and "Polished" versions have an aluminum alloy dome. The others have a brass dome. Brass is more louder and more resonant. Alloy is more tarnish-resistant.
– Steel plate mount fits 23.8 or 22.2mm bars without needing a shim. Just use one of the two slots on the lower clamp.
– Multiple finishes including brass, copper-finished brass, chrome-plated brass, Neo Black, silver alloy, and polished silver alloy (Neo Black is like shiney transparent black. Stealth Black features matte black dome and hardware)
– Made in Japan