The 1 inch landscape Brush is one of the four large landscape brushes commonly used in the Bob Ross Wet-on-Wet Technique. It is used to apply Liquid White/Black/Clear, paint clouds, skies, water, mountains, trees, bushes and numerous other effects with surprising detail. The Bob Ross landscape brushes are special brushes made from a blend of natural and synthetic bristles and shaped according to Bob's very precise specifications for the Bob Ross Wet-on-Wet Technique. Remember, ordinary brushes are not the same and can't create the same beautiful effects these will.