Aluminium Icing Ruler Straight Edge Smoother - 18" 
Create a perfect, smooth finish to the top and sides of your cake when creating a royal icing, buttercream or ganache finish.
To use - apply icing to top of cake using a paddle action with a palette knife, then use the ruler at an angle to draw across the top of the cake from back to front to create a smooth surface.
Bevelled sides on long edge.