This item is for extending an existing set or for replacing lost parts and consists of a pack of 25 long purple flexible links (used for double and triple bonds).
Similar length gray links are also available (see related... below) - please ensure you select which you want.
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.
This pack of white Molydome style atoms are used typically to represent hydrogen atoms in a compact way and is for extending your existing set or for replacing lost atoms.