This chemistry molecular model kit set includes 86 atoms and 153 bonds and 1 short link remover tool.

Made of Non-hazardous Materials ( PP for atoms , LDPE for link , ABS for box)

86 atom pieces may make up of 12 different elements.

153 links include long flexible ones (good for double and triple bonds), medium-length hard links, and two types of shorter space-filling links.

The link removal tool easily separates atoms from the links.

It is a great set for teaches to teach and for students to learn.