The Wooster Silver Tip Angled Sash Brush is ideal for water-based paints, but suitable for all paints and varnishes.It is a synthetic brush, comprising a long wood handle, angled head and stainless steel ferrule. Made with CT polyester fine tipped filaments for excellent levelling, smoothing and a superior finish. Ideal for cutting in.,The Wooster Silver Tip Angled Sash Brush is ideal for water-based paints, but suitable for all