The 50-piece Faber Castell assorted connector pens are sketch pens that clip together to form various patterns while facilitating easy storage. Colours are completely washable and child safe- is made of food grade ink. The art set's click seal cap prevents drying while their broad barrel design are chunky enough for an easy hold. The connector pens' medium point tip provides brilliant colour coverage to help kids have an uninterrupted go at colouring.