Grand Prix® Filbert shape• Use® filbert brushes for botanical shapes, details of the human form, and portraiture. Curves, ovals, shaped figure work. Grand Prix® Long Filbert shape easy reach to canvas, ease of control without stress; for portraiture, still life, figurative, shape, detail. Long filberts are 20% longer length out than traditional filberts. Grand Prix® Fine artist brushes feature multi-diameter bristle filaments that carry heavy bodied acrylic paints effortlessly across your painting surface. Grand Prix® series is stiff, durable and snappy with fine points for crisp, clean strokes. Grand Prix® series are rugged enough to withstand rough treatment on textured surfaces. Paint Type: Oils, Acrylic, Jar and Heavy Bodied Acrylics, Oils, Gouache, Casein, Varnish. Grand Prix® series brushes are handmade by expert artisans who undergo extensive training before they are skilled enough to produce the kind of quality that has become synonymous with Silver Brush Limited. Recommended age 13+ years