The "glue" of the strong nuclear force, it likes to hang around with the Quarks. The GLUON is the boson who communicates the strong force, which holds quarks together. It has no mass or charge. Gluon is also part of the Boson 5-pack.
Approximately 2 oz/57 grams; 5.5 inches/15 cm across.
For ages 5 and up as it contains glued-on/small parts.