Hexagonal-enneagonal duoprism

The hexagonal-enneagonal duoprism or hendip, also known as the 6-9 duoprism, is a uniform duoprism that consists of 6 enneagonal prisms, 9 hexagonal prisms and 54 vertices.

This polychoron can be subsymmetrically faceted into a digonal-triangular triswirlprism, although it cannot be made uniform.