Städter Modelling Tool 11.5cm The Städter Modelling Tool 11.5cm is essential for modelling and decorating fondant. The tool comes with 3 different wheels, allowing you to create different patterns. There is a smooth wheel, a serrated wheel and a wavy wheel. Great for stamping stripes, checks or squares in fondant. The whole tool has a length of 11.5 centimetres and the wheels are interchangeable.