The ZN-8A is built on a 3 " diameter brass or
bronze base which has a beveled top edge and
a grooved  side. It sports a total of 6 ball
bearing, 3 per lever arm. The sleek design
gives it the low profile look. Fingerpieces shown
are red carbon fiber but other selections are
available. The standard ZN series features also
apply to this key.
 The bronze base has black
posts and a black bearing plate.