10-2 bigyrochoron

The 10-2 bigyrochoron, also known as the rocky 20, is a convex isochoric polychoron with 20 order-4 truncated parallelogrammic altertegums as cells.

Each cell of this polychoron has chiral digonal prismatic symmetry, with 4 mirror-symmetric hexagons, 2 rhombi, and 4 kites for faces.