The d120 by The Dice Lab is a mathematically balanced 120-sided disdyakis triacontahedron die. The injection-molded die features 120 equal elongated triangular sides, the highest possible number of equal faces for a fair die.
The numbers on the d120 are paired with their opposite faces to total 121, and the numbers around each of the vertices are also balanced with each group of 10 numbers around the vertices totaling 605.
The d120 is available now from The Dice Shop at Mathartfun.com.
photos via Mathartfun