Heptagonal duotegum

The heptagonal duotegum or hedit, also known as the heptagonal-heptagonal duotegum, the 7 duotegum, or the 7-7 duotegum, is a noble duotegum that consists of 49 tetragonal disphenoids and 14 vertices, with 14 cells joining at each vertex. It is also the 14-6 step prism. It is the first in an infinite family of isogonal heptagonal hosohedral swirlchora and also the first in an infinite family of isochoric heptagonal dihedral swirlchora.