Specifications include, but are not limited to: Group One Brushes in this group are of the finest quality for use with latex and oil base paints. These brushes are recommended for painting woodwork, trim, doors and cabinets. Group Two Brushes in this group are of the finest quality for use with latex and oil base paints. These brushes are recommended for painting window sash and trim, small objects and difficult to reach areas. Group Three Brushes in this group are of the finest quality for use with latex and oil base paints. These brushes are recommended for painting walls, floors, shingles, siding, woodwork, trim, furniture, doors and cabinets. Group Four thru Nine Brushes in these groups are of the finest quality with the finest filament materials blended for smooth even paint flow, improved paint pick up, less drag and reduced brush strokes, and easier, more precise cutting in.