This molecular/atomic model set includes 174 balls (in 8 different colors) and 235 connectors (in 4 different colors). Easy storage in a 3-tier carry case with handle. Instruction Booklet included.
Diameter of the balls ranges from 23 to 30 mm.
Dimensions of storage box: 13 x 7.5 x 6 Inches (330 x 190 x 150 mm)
Measurements are approximate.