Learning Resources Count & Build TotBot Builders. Build your way to early skills development with this nuts and bolts themed robot! The TotBot?s body is made from a two piece bolt, on which young learners can add up to five colourful nuts to complete their toy robot. Nuts come in five different colours, each featuring a different number and shape. The included plastic, toy wrench can be used to tighten the nuts while also developing fine motor skills. Set includes two-piece robot, five plastic nuts, detachable bolt and toy wrench.