This pack of 10 metallic gray atoms is for extending your existing set or for replacing lost atoms. Each pack contains 10 balls with three holes in each ball at 107° (pyramidal). Each atom is 23 mm diameter.
The Molymod® system is the original, unique, dual-scale system of high quality low-cost molecular models. These enormously popular sets are ideal for students but are also used by scientists all over the world.