The tickit Rainbow Keys are chunky beechwood keys, all featuring different projections which are numbered from 0 to 10 on one side with corresponding numicon dots on the reverse.Ideal for recognising numbers, learning to count and using in simple mathematical processes.The keys can be used as an add-on set to our Rainbow Loose Parts range as they come in the 7 colours of the rainbow, with additional keys in black, white and natural undyed wood.Includes string key ring with natural wooden toggle for keeping them togetherSize of longest key: 120mm. Age suitability 10 months+