About Venetian plaster:

This application method will result in a very smooth, highly polished surface that resembles polished marble which includes subtle shadings of the plaster color.

Premium quality “blue” steel:
Symphony Venetian Plaster Spatula premium “blue” steel blades will not mark the plaster surface with black streaks as will stainless steel trowels and joint compound wall knives.

Why three different sizes?
Each size is best for a specific work area. The smallest tool reaches into corners and other tight spaces. The larger sizes work better on the open wall.