Twelve hardwood solids: cylinder, sphere, hemisphere, cone, pyramid, 7 prisms (including cube, rectangular prism, triangular prism, square prism, pentagonal prism, hexagonal prism, and octagonal prism). They range in size from 2" to 3" (5 to 7.5 cm). Use with RightStart™ Mathematics Levels A/RightStart™ Mathematics Grade Kindergarten.