...using natural white hog bristle. The oval shaped bristles combined with a flat, thin handle give a sense of precision and ease of flow for an even application of paint.
Stencil brushes have bristles that are cut flat to enable a stabbing/ stippling action which is common to applying paints with stencils. Generally speaking the brushes with the longer handle would be used for painting larger areas and stencil brushes for more concentrated areas. The short stubby handles give good control and are less likely to cause tension or cramp in the hand from prolonged use.