Distribution in mass of the IMBPs with diameter between 20 and 1000 km (left) and distribution in mass of all the inner main belt asteroids from the paper of DeMeo & Carry (2014) (right). For the plan-etesimals, we use the Bus&Demeo taxonomy, while DeMeo & Carry (2014) used the Tholen one. Therefore, X, Xk, and Xc classes on the left side should be compared with the E, M, and P ones on the right, while Ch/Cgh-types fall within the C-class in the Tholen taxonomy.