The Inart 1001R Round Oil and Acrylic Brush No. 4 (110799037) maintains the firm bristles of the range, ideal for moving thick paints such as oil and acrylic without the brush head losing its shape with repeated use over several intense work sessions. The short varnished wooden handle ensures a comfortable grip, suitable for both details and small patches of denser paint on canvas, canvas board or wood without losing precision in the stroke. No. 4 is a small to medium size within the 1001R line, balancing detail with some ability to fill small to medium-sized areas without requiring as many brush strokes. It is suitable for those who already have the No. 2 from the same line and want to expand their brush set for slightly larger and more varied oil and acrylic works.