These sets are very helpful in modelling different organic Inorganic compounds. These sets consist of moulded balls of different colours and sizes along with connecting lugs of different sizes. 

Senior Set : This set consists of 150 lugs 370 balls of prescribed colours and sizes packed in a moulded box having separate space for every particular colour size of ball.

Junior Set : This set consists of 30 connecting lugs and 75 balls of different colours and sizes.

Material: Polystyrene.